♪ good morning, everyone. it is saturday, september 3rd. i'm amara walker. >> great to be with you, amara. i'm boris sanchez. live in the cnn "newsroom," we're grateful to be a part of your labor day weekend. this morning, we are closely

watching nasa's historic artemis i mission preparing for a second launch attempt to the moon. these are live pictures coming straight from kennedy space center in cape canaveral, florida, where crews are working on a liquid hydrogen leak that delayed fueling the massive rocket. the two-hour launch window still expected to open up this afternoon at 2:17 p.m. currently weather conditions are 60% favorable. >> the mission will mark the united states return to the moon for the first time in nearly 50 years. and aims to land the first woman and the first person of color on the moon without -- within the next few years. and it will eventually send the first astronaut to mars. and while nasa said there's no guarantee that the launch will happen today, engineers appear optimistic that this rocket is ready to fly. let's go now to cnn's space and defense correspondent kristin fisher live this morning from the kennedy space center. hi there, kristin.

any good news to update us with? >> reporter: hey, guys. good morning. i wish i had some better news for you, but it's not over yet. let me walk you through the problem of what we've been watching over the last hour. since i last spoke to you, nasa engineers have been troubleshooting this hydrogen leak. and here is where it is. this is the sls rocket. this is the main core stage. right now they are trying to fill this core stage with super cooled propellant, liquid oxygen and liquid hydrogen. in one of the lines called the quick disconnect, it's a hydrogen line that goes right in about here, they've encountered a leak. it's about eight inches wide. and you know, we actually had a chance to go out to the launch pad yesterday. we were able to get some shots of where this problem area actually is. it is enormously complicated. there are wires and hoses and valves everywhere. i mean, it is kind of a miracle

that this thing ever actually works. but they have fixed, it appears, that first hydrogen leak that they encountered on monday. so this is a new hydrogen leak in a different place. and you know, part of the reason that this is such a troublesome spot for nasa and the entire artemis team right now is because of liquid hydrogen itself. hydrogen is the smallest molecule in the universe. it is notoriously difficult to deal with because it's so small, it's, of course, very easy to leak. and so this is the same type of fuel that they used during the shuttle program. nasa, as an organization, is very familiar with it as a rocket fuel, but remember guys, it's been over a decade since the last space shuttle launch. so this is an entirely new work force. even though nasa the organize is familiar with liquid hydrogen, this launch team is really kind of dealing with this countdown,

this type of fuel for the first time in a long time. and a lot of the old shuttle folks have retired. so this is part of the issue when you're working through a first test flight. yes, there's engineering and mechanical constraints, but it's also about getting this work force up to speed. it's more than that. it's kind of like getting comfortable with -- getting comfortable with the risk. how much of the leak or how much of going out of the deviation of the sensors is appropriate? and what are they comfortable with? guys, that's what they're working on right now. the big question is even if they get this leak fixed, is there going to be enough time to launch this rocket? because there was a two-hour launch window. they lost about an hour, an hour and a half trying to troubleshoot this problem. there's a chance they could make it up, but it's just not clear yet, guys. >> and they are hoping they don't have to rely on the backup of a launch on monday or tuesday, but the option is there. kristin fisher from kennedy

space center, thank you so much. let's get a quick look at your weather forecast with meteorologist britley ritz. she's at the cnn weather center right now. they have these complications with the rocket. they're trying to get that fixed. they're trying to make it into that two-hour window later in the afternoon. how do you think the weather is going to look when we get to 2:17 p.m. >> well, the latter part of that launch window is actually the better time frame when it comes down to weather to get that rocket off the ground. so fingers crossed that we can actually make that happen. right now i want you to look at satellite and radar. showing you scattered showers across the atlantic. one of them popped up right within the 10 mile radius of cape canaveral, one of the things we have to watch for. showers, not only that, but the cloud itself and lightning within ten miles. our eyes are peeled on radar over the upcoming hours. the scattered showers continue. you'll see the lightning well off into the atlantic, but that east wind is key. if that wind pushes the showers

on the shore, we could potentially deal with a scrub. so we're watching that. right now winds are pushing out of the southeast, which if that happens we have a better chance of catching on to a shower. but as these winds shift over the upcoming hours, more east ward, that pushes the sea breeze the heat of the storms further inland so we have a better opportunity for the showers and storms to stay inland and a better chance for a launch time. so you'll see that here on your future radar showing you that rain pushing inland as the sea breeze kicks up, as temperatures are back up around peak, around noontime to 1:00 in the mid to upper 80s. another thing we have to watch, not just the lightning within the storm but the rocket itself with the thrust as it goes up can create its own lightning. a lot of key factors in here with this launch. >> yeah. a lot. millions of factors, right? britley ritz, thank you. joining us now is retired nasa astronaut colonel jack fisher. colonel, good morning. thank you for joining us.

first off, what's your reaction to this liquid hydrogen leak. how big of a setback is it? >> you know, good morning and thanks for having me. it's space flight. space is hard. and we find little dings along the way, but we make them work. and i have incredible confidence in the nasa team. we do have a lot of experience with these type of things. as kristin mentioned, they fixed one just from the attempt earlier this week already and they have a few things still up their sleeve to try to reseal that valve. give them a chance. we still have a chance at this. >> colonel, you noted a couple tricks up their sleeve to reseal the valve. we're getting update into my inbox from nasa. they're again stopping the flow of liquid hydrogen into the core stage tank to try another

troubleshooting procedure. i don't want to get too into the weeds with the technical stuff, what happens with liquid hydrogen that's so critical to help this rocket take off? explain to me as if i'm 5, please. >> sure, i will. >> as mentioned, liquid hydrogen it is so small and super cold. 423 degrees below zero. we need it because it's a fantastic fuel. one of the things that they are trying now is using some helium to increase the pressure make that surface so we don't have leak. we need it because it's the primary fuel. and all of these problems there's millions of them in this rocket. that's what's so impressive about what's happening today. when this baby finally goes, whether this morning or later this week, it's a testament to what humanity can do when they

do the impossible. so, we still -- there's still tricks. and they will continue troubleshooting until this baby works. >> boris, did that work for you? did he talk to you like you're 5? >> yes, yes, very much. >> spoke to you at your level. i didn't know he was going to be like, boris, this is how it works. no, i'm kidding. so, i guess what are you looking forward to the most? once artemis has launched, what is the most important thing in your opinion? >> so i work as a company part of the artemis program ii. doing a robotic lander to the moon in march. and it's just to recapture the imagination of humanity that is so exciting to me. when 8.8 million pounds of thrust, think about that, oh, that's so cool, goes flying out the back of that rocket, all of

the kids, all of the people, the world over united in one thing for us to take that next step and evolve as a humanity towards something more, it's the inspiration that just makes me so excited about what's happening right now in space. so this is an incredible day and i'm excited all of us can be a part of it. >> and once we get back to the moon, there's very specific portion of it, the south pole, intense focus on. not just the united states. it's also china because as i understand it, that could help propel human kind toward mars. help us understand the significance of getting to that south pole and what's there. >> you bet. south pole has a lot of resources, including water. that's where our lander is going to land, looking for water. and that is one of those building blocks of civilization and infrastructure that we'll

need to go to the mars and into the solar system. it is key. and you mentioned china and some people bring up is there a race. this race is different. it's not the u.s. and the soviets. having proxy for war. it's all of humanity. leaving this little blue dot and finally exploring. and going as one species to become more than we are. so the south pole, it's key. it gives us all the building blocks we need to continue to take those steps into the stars. and pretty darn exciting. >> so artemis i is this test launch that will hopefully happen between 2:17 and 4:17 today. then you have artemis ii that is estimated to hopefully happen around 2024 where nasa will launch four astronauts, not to land on the moon, but to take

that long loop around the moon. and then artemis iii is -- will hopefully be in 2025 to '26 will be the first landing for the first woman and first person of color on the moon and help establish the first long-term presence. my question to you is what will researchers want to learn then once we have foot -- our feet on the moon, what kind of samples will they be gathering? what kind of questions will they try to answer? >> you bet. and so as we go through those steps, artemis iii and once we get on the moon, having different ways to generate power, different ways to use resources, different ways to explore in the heavens in more efficient ways so that we can bring that technology back to earth so that we can bring some of the industries we don't want on earth that can hurt our earth away from it. and really take those steps out into exploration and more.

those are kind of general -- i was sticking with the 5-year-old level, but we can jump up. >> no, no. that's more than enough. that's more like 15-year-old level for me at this point. too much. >> colonel jack fisher, appreciate the time. we look forward to watching this launch hopefully later today. we'll see. >> sounds good. i got my fingers crossed. >> thanks so much, sir. appreciate it. still to come, right now more than 40 million people are under heat alerts out west. ahead we'll tell you what to expect going into the holiday weekend and whether there are any signs of cooling off soon. plus, millions of people expected to hit the skies this weekend for the holiday weekend. we'll tell you about some changes some airlines are making ahead of some possible delays and cancellations. plus, she may have been defeated in the u.s. open, but all eyes are still on serena williams. was last night's match her last?

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out west this morning more than 40 million americans are under extreme heat alerts as more than 200 locations could break temperature records this holiday weekend. even states as far north as montana could see record heat close to the triple digits, 20 to 30 degrees above average for this year. >> officials are continuing to urge residents in california to cut back on using electricity to avoid widespread power outages in the area. here is more on just how hot it is there. >> reporter: across the west,

the scorching heat is showing no signs of cooling off this holiday weekend. >> our ac at home can only do so much when we're in these triple digit. >> reporter: in glendale, california, the residents are taking advantage of the free air-conditioning. >> getting out to the mall and just getting out of the house to get some sort of cool relief is nice. >> reporter: california is in the midst of its longest heat wave of the year, a major concern especially in large cities like los angeles where dark pavement and buildings can easily absorb heat, bringing little relief overnight. skid row is an urban heat island, which is why water is crucial, especially when temperatures hit triple digits. >> free water! free water! >> reporter: that's why volunteers with water drop l.a. are checking up on the unhoused and the elderly. >> did y'all want water? >> yeah, sure. >> reporter: handing out cold water to those who need it. >> at the core, we're all people. and we should care about each

other. we should love each other and look out for each other. >> reporter: the extreme heat wave testing california's power grid. in southern california, edson crews are busy moving transformers and extra equipment throughout the region. >> we have all hands on deck ready to respond if there are outages to get the power restored as quickly and safely as possible. >> reporter: many californians bracing for more misery ahead. >> it's insane, it's unbearable to be home. >> chris, thank you for that update. some 12 million people are expected to travel this labor day weekend. and the summer-long airport chaos is about to come to a head. >> as airlines continue to make changes to customer service agreements in order to respond to cancellations and delays, it's looking to be a frustrating weekend for millions of vacationers. cnn's pete muntean has more. >> reporter: with flight cancellations by the thousands,

passengers demanding refunds and pilots picketing at airports across the country the labor day travel rush is shaping up to be a dramatic end to a summer of travel struggles. on tuesday alone, more than 800 flights were cancelled nationwide, mostly for bad weather. the new summer long tally, more than 45,000 flights cancelled by u.s. carriers since the start of june. >> it's staggeringly frustrating because you can be there about ready to board and it's like, god, not again. really? can't just something -- can't something be on time? >> reporter: new tools for passengers are coming just in time for the holiday rush. the department of transportation is rolling out a new online dash board laying out what each airline owes you if you're delayed or cancelled. the federal government has been flooded with complaints from fed-up fliers up 270% in june compared to pre-pandemic figures. 38 state attorneys general just wrote congress to say an industry that received billions

in federal pandemic aid has failed their customers. >> this summer too many flights have been delayed or cancelled. >> reporter: transportation secretary pete buttigieg is getting some results from airlines, many have now rewritten your ticket's fine print in plain language n some cases improving when you can get hotel and meal vouchers. on united airlines, you were entitled to a meal voucher after a four-hour delay, but now it's after three hours. >> a lot of the airlines have really upped their game. i think committed to some consumer protections in writing that they hadn't previously. >> reporter: pressure on the airlines is also coming from their workers. off duty pilots from delta, united, spirit and american airlines protested across the country thursday, insisting cancellations are the carrier's own creation and passengers are caught the middle. >> we understand that frustration because we live it everyday. >> reporter: frustrations are high, and so are ticket prices. travel site hopper says air fare has jumped 23% compared to the

same weekend last year, up 20% compared to the same weekend 2019 before the pandemic. in all, hopper anticipates 12.6 million americans will travel domestically by air over the labor day weekend. boris, amara? >> reporter: our thanks to the mayor of d.c. e, pete muntean. the u.s. added 315,000 jobs last month, more than analysts expected, but it did mark another month of job gains slowing down. >> and while it may have been a slower month for hiring, the strong market defied fears of a worsening economy hitting a 20th consecutive month of job growth. here is cnn's chief business correspondent christine romans to help us unpack the report. >> reporter: the labor market remains strong as we head into the labor day holiday, but hiring slowed. employers added 315,000 jobs, well below july's red hot 526,000 pace.

some 3.5 million jobs added this year, and the hiring in august was broad based, led by professional and business services, health care, retail and manufacturing. the jobless rate rose to 3.7%. why? well, thanks to more people looking for work. that pushed something called the labor force participation rate up .3%. all in all, a welcome normalization in what has been an anything but normal jobs market. remember, fed chief jerome powell said last week the labor market is, quote, clearly out of balance with demand for workers substantially exceeding the supply of available workers. key speeches from the fed chief and fed governor next week could provide yet another snapshot into how aggressive the fed will act when it meets in september. boris, amara? >> christine romans, thank you. mississippi governor tate reeves says state authorities

are tracking a plane whose pilot is threatening to intentionally crash into a local walmart. now the walmart says the store is currently closed and has been evacuated. police say they are speaking directly to the pilot and that all emergency services in the area are on alert. >> we have been tracking this breaking story for a few hours now. it is bizarre and officials say the pilot called 911 around 5:00 a.m. making the threat against the walmart. the governor tate reeves is telling all residents to be on alert and aware of updates from the local police department. we're, of course, going to keep monitoring this situation and bring you all the latest developments. stay with cnn. we'll be right back.

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donald trump's mar-a-lago estate after a federal judge unsealed a detailed inventory of items from the search on august 8th. it shows that classified documents had been mixed in with personal items, including press clippings, clothing, even gifts. federal investigators also retrieved more than 11,000 nonclassified government documents. they found dozens of empty folders with classified banners, too. the federal judge released the inventory is now weighing trump's request for a special master to review the documents. she's indicated she's inclined to grant that request. let's discuss the legal implications now withprosecutor topic podcast." thank you for sharing part of your labor day weekend with us. what stood out most of this inventory of the search at mar-a-lago? >> well, a couple things. well, first of all, there's been a lot of discussion about this. there's a lot of folders of

class -- that were marked classified that don't have any documents inside of them. we don't know exactly what that means. it could mean that the former president just was sloppy in terms of how he was keeping the records. it also could mean there are some records missing. so i think there's certainly some questions raised there. also i think you can see, boris from the search warrant that there's a lot of personal property that was seized in addition to the classified documents. that was what the government was referencing in its filing about how some of the property was co-mingled with the classified documents shows the former president's personal handling of those classified documents. so i think that's ultimately going to be important evidence for the government. >> we're still waiting for that judge to rule on trump's request for a special master, basically a third party that can sift through the documents to see what is admissible, if there is a case, and what is not.

i want to listen to what trump's former attorney general bill barr had to say about that. >> i think that the whole idea of a special master is a bit of a red herring. at this stage since they have already gone through the documents, i think it's a waste of time. >> do you agree with the former a.g.? >> i do. i mean, the investigative teams already reviewed all the documents. so, at this stage i really don't understand what a special master is supposed to accomplish. i understand that the trump team may be doing that just to sort of potentially try to delay matters or score a point in court, but i really don't think it moves the ball forward for the defense. and i also don't think it accomplishes anything for the case more generally. >> and what about you mentioned the empty folders with the classified -- is there a bird in that room? >> there is. i apologize. a little noisy.

i gave her something to keep her occupied but not enough. >> not a problem. i wanted to make sure i wasn't going crazy. so you mentioned the folders with the classified markings being among the things that were recovered, what did you make of the fact that there were all sorts of random stuff in there, too, the magazines the gifts? that was unexpected. >> well, i think that's right. i think it goes to show, as i was mentioning a moment ago, boris, it goes to show the way in which these documents were kept. it goes to show who was the possessor and owner of these documents. the fact that they're mixed in, let's say with passports and mixed in with "time" magazine covers. all will be shown in evidence at trial to show that the former president is the one who actually possessed these documents. it wasn't an aide, off acting on their own without his authorization. it wasn't something where he had no idea what was in his office. he was personally handling these documents himself. and he was the one who decided

to keep them. >> i also wanted to get your perspective on the appearance before a grand jury in d.c. of former trump white house lawyers, pat cipollone and patrick philbin. what's the significance of their appearance? >> well, i think it could be very significant. you know, all of us who watched the january 6th committee remember moments where pat cipollone was asked a question, he consulted with his lawyer and then he said it was privileged. all of those questions would be answered in front of the grand jury. the d.c. circuit case law is very clear that grand jury proceeding trumps the concerns of the grand jury trump any concern of executive privilege or attorney/client privilege for government lawyer in that context. so i do think he'll answer all those questions. usually in my experience people give very candid statements to their attorneys. they seek candid advice from their attorneys. and while mr. cipollone was an

attorney for the office of the presidency, not for trump personally, it's not clear to me that the former president understood that distinction and was being guarded in his statements to mr. cipollone. >> a lot to parse through and plenty more likely still to come. renato, thanks so much. enjoy your labor day weekend. >> thank you. >> of course. cnn has uncovered the high cost of texas governor greg abbott's plan to bus migrants out of his state. just how much it's costing taxpayers in texas next. because with miro, they could problem solve together, and find the answer thatat was right under their nose. or... his nose. for people who are a little intense about hydration. neutrogena® hydro boost lightweight. fragrance-free. 48 hour hydration. for that healthykin glow. neutrogena®. for people with skin. (vo) at viking, we are proud to have been named

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cnn's polo sandoval joins us live. polo, what is cnn learning about the cost of texas taxpayers of governor abbott's plan. >> reporter: the number released by state authorities is likely higher now. asked how much the state of texas has spent since april to offer these free bus rides to migrants who have been processed by the department of homeland security and free to travel throughout the country and this number that you see here is what they responded with $12.7 million. august 9th, the date on top, it's very likely this number is extremely outdated. it's certainly higher as we have seen those buses continue for the last three weeks or so. what's important to mention here is that these are rides that are being offered to migrants that are free to travel about the country, typically they pay their own way. they have to cover their plane ticket or their bus ticket. and so we have turned to greg abbott's office asking to see if it makes any financial sense at

all. they released a statement basically just touting their border seizure numbers and apprehensions but also taking political jabs at president biden. greg abbott's office writing until president biden and congress do their jobs and secure our southern aborter, texas will utilize every strategy to address this border crisis and protect texans. we should mention not long after this statement was released, two buses pulled up to chicago with just under 100 migrants. certainly hints that the governor of texas is not done. we should, of course, note that arizona has also sent buses with migrants to the northeast. significantly smaller cost. really i spoke to a migrant advocate, boris and amara, they actually welcome the news as many migrants here are certainly looking for an opportunity to save on their bus and plane tickets. >> yeah. i'm sure. but, just in terms of new york, polo, do we know how many migrants have been sent there by governor abbott?

>> our colleague obtaining fresh numbers here. we can put those up for our viewers to give you an idea of how many buses have gone from texas to washington, d.c., which started in april, new york which started four weeks ago today, now about 1,900 and chicago just about 95 or so the total, about 95 total people. now, that 1900 number is really important here, boris and amara. you compare to what i heard from one city official which is 8,800 recently arrived as asylum seekers processed through their new york city shelter system, that 1,900 is just a fraction, still about well under 25% of the total migrants that we have received here in new york city, which means that a majority of those are making their way here to new york on their own, even before the texas governor's antagonizing move. >> polo sandoval, reporting from new york city, thank you so much, polo. >> thanks, guys. >> of course. we have a quick programming note for you, fareed zakaria exploring america's mass

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want a permanent solution to homelessness? you won't get it with prop 27. it was written and funded by out-of-state corporations to permanently maximize profits, not homeless funding. 90% of the profits go to out-of-state corporations permanently. only pennies on the dollar for the homeless permanently. and with loopholes, the homeless get even less

permanently. prop 27. they didn't write it for the homeless. they wrote it for themselves. police in michigan are investigating how a voting machine used in the 2020 presidential election went

missing and then was discovered for sale on ebay. >> oh my goodness. here is donie o'sullivan with the story. >> reporter: harry? what's in the box? >> that is a device which can be configured either voting machine, marking device. >> reporter: this box should not be here on harry's kitchen table in connecticut. >> yeah. i have been asked not to open it so that if it's part of criminal investigation, it's preserved as evidence. >> reporter: he is an elections expert. he bought this voting machine for $1,200 on ebay. >> as far as i was aware, it was a completely legal sale on my end. >> reporter: the ebay seller is an uber driver in ohio. >> in your ebay ad you wrote dominion image cast x voting machine from michigan, own a piece of history. this voting machine was one of thousands used in the 2020 u.s.

presidential election. >> reporter: but how did an uber driver in ohio get his hands on a michigan voting machine? he bought it from goodwill online. >> i saw a listing for what looked like just an industrial touch screen computer. and i got to looking through the pictures. in one of the pictures i saw on the bottom corn of the screen it said dominion voting. on a whim i bid on it. i was the only bidder and i won the auction. >> how much did you pay for the voting machine? >> i paid $7.99. >> i'm really surprised about this. i mean, $8? he made a good profit. >> reporter: it turns out someone dropped the voting machine off at this goodwill in northern michigan. who that person is remains a history, but the goodwill put the vote mag sheen up for sale on its website. >> i wasn't aware that they were supposed to be sold let alone donated to goodwill. >> it is shocking that only when we started asking does it belong somewhere, only after that they realized it has been stolen.

>> reporter: they being the michigan secretary of state's office. one of michigan's voting attempt ill illegal. >> reporter: authorities are investigating unauthorized access to voting systems by people try to claim the 2020 election was stolen. >> there is a national effort, individuals who don't seem to understand the technicalities of the elections process or election security, trying to

gain access to machines to keep misinformation alive. >> reporter: what do you say to the voter who is skeptical, who is watching this and saying, they lost a voting machine in michigan? >> a couple of things. one, michigan's elections are secure. before every election we test every machine for accuracy. we've never seen, even with this unauthorized access to machines, any challenges to security in the process. >> reporter: police are trying to figure out how that voting machine got to this goodwill in cadillac, michigan, goodwill telling us they process thousands of items every week here in northern michigan. it's not even clear if goodwill knew this was actually a voting machine when they put it for sale on their website. it kind of looks like just a big monitor, a big screen. of course lots of security concerns about this, which is being investigated. but just a reminder, you never know what kind of deals you will find at a goodwill or on ebay. donie o'sullivan, cnn, cadillac,

michigan. >> what an incredible story, donie, thank you. she's been a household name for more than two decades. last night serena williams played what was likely her last match in front of a sold-out stadium. a look at her storied career and why she's one of the greatest athletes o of all time. and now get relief without a pill with tylenol dissosolve packs. relief without the water. it's time for the biggest sale of the year, on the sleep number 360 smart bed. it senses your movements and automatically adjusts to keep you both comfortable. our smart sleepers get 28 minutes more restfu sleep per night. don't miss our labor day weekend ecial. save 50% on the sleep number 360 limited editiosmart bed. ends labor day. ♪ here goes nothing. hey greg. um...hello? it's me, your heart! really? yes! recording an ekg in 30 seconds. tada! wow that was fast!

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she is considered by many to be the greatest tennis player of all time. now serena williams has played what likely is the final professional match of her career. >> after losing friday night in the third round of the u.s. open, here is what serena said

about what comes next. >> for me, tennis has been such a huge part of my life. i can't imagine not being involved in tennis. i don't know what that involvement is yet. i don't see a future without it. what's my involvement? i have no idea. but i think -- i think i'll be involved in some way or shape. >> i'm sure she will be. cnn's don riddell has look back at serena's remarkable journey to her decade-long dominance. >> reporter: when you're a tough athlete, the withhold world knows your name. when you're one of the best of all time, they'll know you by just one name. serena. she's come a long, long way from the bubbly teenager who burst onto the scene in the late 1990s, following in the trail of her older sister venus. serena was never short on confidence. >> i've always expected the best for myself, always expected that i was going to be the best

player, i was going to go out there and do good. >> reporter: do you feel ready for all the stardom that's sure to follow in the way you have so far? >> i know i'm ready for it, because if i wasn't ready, then maybe i should have stopped a little while back. >> reporter: serena played her first professional match at the age of just 14 and was a grand slam champion three years later. her first coach might have been unorthodox, but father richard had created a world-beater. >> i think my dad was a really innovative coach, even to the way we hit our strokes. it was something new coming into the tennis scene. what's interesting about that is, it really developed my hands. like, i see the ball so fast, like when i come to the net, you can fire a ball at me, i get it back. >> reporter: twice she's held all four major titles at the same time. she's also one for gold medals at the olympics.

she's faced numerous challenges along the way, not to mention racism. she almost died of a pulmonary embolism. she began her career in the era of steffi graff and monica seles and has long outlasted her peers. back in 2015, she recognized her longevity was remarkable. >> i think it just boils down to me being good at what i do. yeah, i'm 33, but when you go to the doctor and tell your doctor, i'm 33, he says, oh, you're really young. but in the sport, you're like ancient. >> reporter: but even the great serena williams can't outrun father time. she wants to have another baby and there is seemingly no longer room for tennis. the 23-time grand slam winner has dominated and transcended her sport and is now evolving to

the next stage. er lnobody will do it quite lik her. there will only ever be one serena williams. don riddell, cnn. the next hour of "newsroom" starts right now. buenos dias, good morning, it is saturday, september 3rd. i'm boris sanchez. >> my, boris. i'm amara walker. you are in "the cnn newsroom." nasa may try to launch the artemis rocked on an historic mission around the world. preparations are under way right now at the kennedy space center in florida, including some troubleshooting. officials say today's launch window is still on track for this afternoon at 2:17 p.m. but nasa still dealing with that liquid hydrogen leak that is causing delays in fueling up the