now is the earth really moving towards the moon? we on earth think, no, no, no, no. the moon is moving toward the earth. there's a force on the earth, i mean, there's a gravitational force between the earth and the moon that pulls the moon this way, right? why don't the moon crash? because it's moving like that. so as it's being pulled instead of coming over here, it's moving like this. it doesn't get to here, it gets to here. it's being pulled like that, instead of getting here, it gets to here. and so it gets pulled around and around and around in a circle, but guess what the direction of the acceleration is as it's going around and around and around the circle? it's toward the center of the earth, see? so we think of the moon as going around and around and around us like i take a rock in the end of a string and i go whirl it around, around, around. we talked about the idea that the force along the string is acting toward me, right? the rock is really accelerating toward me. if it weren't it would go somewhere else, but it keeps pointing toward me all that time, hu

these are the simple melodies known the world over as earth songs.ce of nature's splendor, one cannot help but acknowledge and appreciate the creative forces that coalesced to produce such pristine beauty. [ hummingbird's sounds ] to watch the rapid beat of the hummingbird's wings as it hovers over a flower to drink its nectar. to turn around and find yourself standing in the presence of a bobcat. to see a bear stand up on its hind legs gazing at a field of dandelions. these are moments where nature, in an instant of spiritual connection, takes our breath away. for many people these encounters become a mystical experience. elders from the indigenous tribes have an expression for this. they say, we have walked together in the shadow of the rainbow. indeed, these are spiritual moments and nature is filled with them. throughout the many cultures and geographic climates around the globe, the words wind, breath and spirit are synonymous. these currents of gentle winds

this side faces the earth and doesn't the moon go around the earth? well, watch how the moon goes around the earth. what am i doing to the eraser, gang, as it goes around the earth? i'm twisting it because it turns out the eraser's going like this as it turns. and when it makes one turn like this, it'll also make one rotation. so it'll go... and--stopped it, it would just keep... stop it for a minute... ain't that neat? so the moon is turning around and around and around. and you know what? there's a reason why one side always faces us and it has to do with center of gravity and torque. did you pick that up on the chapter on rotational motion? did you pick that up? and when you picked that up, did you say to your mother and father, hey, you know what i just i found out? there's a reason why one side of the moon faces us all the time. how many people did share that with their parents? how many say, well, my parents don't give me anything, i'm not gonna give them anything? do you people share these ideas with the people at home? how many of you people d

when the sky is lit up by the far of a meteorite about to smash into its final resting place here on earth in this case in the middle of russia well off he got a firsthand account from the man who witnessed the dramatic arrival. shiny across the sky. blinding greater than. it was followed by a huge. explosion aboard a minute or so later that broke. the late fixtures were swaying back and forth i don't point to when looked out the window when i saw this extrude going across the sky. like the tail of the cloud or what what had just happened that night at that point i knew it was something that came from the sky immediately called one of my teammates who lives in my. you know i couldn't get through to him by phone in work so i was a little bit scared point well the meteor exploded in the earth's atmosphere resulting in multiple fragments falling near populated areas and surprisingly the incident triggered huge panic among people in the affected region and that is you got a piece going off now reports well this was right about the time when most people were already at work the children were in

but how about the force that acts on the earth? the mass of the earth is like this. and when you take that force acting on a humungous mass, you get an acceleration like this. see it? [laughter] it's like negligible. and see, you don't sense it. but if the earth was smaller and this more massive-- in fact, what if this was as massive as a whole world and we held it like this and we dropped it. how far will it go, gang? will it go all the way down there? - halfway. - it'll go halfway. right. because if this was a mass of the whole world, then this would come down just as much as the earth would come up and it meets halfway. ain't that neat? ain't that neat? so you can take ideas and stretch them, stretch them, stretch them and they become fascinating. i take a rifle. i fire a rifle. bam! any force act on the bullet? oh, yeah, honey. you know darn well a force act on the bullet, 'cause fooom! that bullet accelerates humungous acceleration. so you know there's a force in the bullet. any force kicking back on the gun? let me ask you a question. can there be a force on th

it will be 1/14 of the distance of the earth and moon.n is farther away this thing will be, and travelling over 17,000 miles per hour. keep it here for the historic event and we'll have live coverage of the fly by, it's supposed to happen again 2:24 p.m. eastern time right here. we're also watching a developing story in chicago where the president is expected to make remarks in about hour from now. we expect to hear him comment on gun control. this comes as we're learning about a bill introduced by a group of democratic lawmakers in missouri that could potentially turn thousands of legal, lawful gun owners into felons. the bill would ban assault weapons and other semi automatic guns with what they call assault weapon features and give gun owners 90 days to either get rid of, disable, or surrender to the government their currently lawful firearms. if they don't do it the sheriff could come knocking at the door and confiscate them. it's a bill that's proposed and missouri is not the only state. minnesota is pursuing a similar measure. joini

with this kind of asteroid that is coming so close to earth, albeit now traveling away from earth, can it indeed affect the weather? >> well, this one won't affect the weather. if something like this would actually had the the earth, asteroid this size, it's about 150, 200 feet across, then it could affect locally the weather. if a much larger one hit the earth it could affect the weather globally? >> reporter: in what form? >> throw dust up in the air and debris up into the air and then it shades the sun, lowers the temperature, so that could have a global effect if it were big enough. >> reporter: big viewing party tonight at 7:00? >> yes. we'll have our telescopes open here. we'll be pointing at the asteroid and follow it as it moves away from the earth back around the sun. >> reporter: i'm one that's very interested in this tonight. i hope you are too. for more information, it's cbssf.com. and you'll find all you need to know right there on our homepage. reporting from chabot science and space center in oakland, roberta gonzales, with mobile weather, kpix 5. >>> we have even more s

let it fall to earth by earth's gravity. get the sun out of the way, okay? just by earth's gravity. splat. i'll bet you're sitting next to someone who knows what the speed of the splat is, at least the upper speed, check it out. what's the maximum falling speed for planet earth? what's the answer, gang? 11.2 kilometers. 11.2 kilometers per second, right on. it's gonna be the same speed it takes to escape. how fast it has to go to get out there will be how fast it would fall back in again 'cause what slows it down-- hey, hey, hey, and it all ties together. are you ready for quiz that'll take care of all of mechanics? a little sample quiz, here we go. look over here, folks. here's a satellite going around in elliptical orbit around the earth. i'm gonna ask you a bunch of questions and see if you can answer the questions. at what point a, b, c, d is the gravitational force that acts on that satellite a maximum? here, here, here or here? write on your paper a 'a,' a 'b,' a 'c,' or a 'd'. or if you think the gravitational force on the satellite is the same everywhere, then you write down

these are near earth asteroids and a lot of them are whizzing past the earth. using our telescopes on the ground we've only surveys 1% of the volume of space. the real solar times has 100 times more asteroids than you see now. these are the 10,000 known real asteroids. the real solar system looks like this, 1 million near asteroids larger than the one which hit in 1908. that means we found 1%. the other 99% are currently out there but unknown. let's look at asteroids five times bigger than all the bombs used in world war ii and there's a 1% chance that's going to happen in any person's lifetime. that's also your chance of dying in a car accident, 1%. >> wow. >> i'll ask you, do you wear a seatbelt? >> i do. >> why? it's only 1% chance in your lifetime you're going to get killed by a car. why would you do that? it's not big odds, right? >> it's not but i do everything i can to try and protect myself. >> so who is protecting the earth? >> up next, meet the sentinel, ed lu's astonishing telescope that just might save the world. (music throughout) why turbo? trust

and then we have a nation buster which is going to come grazing past the earth and may even hit the eartht's called the asteroid apofet. it's ten times bigger than the asteroid that scimed the earth last week. >> stephen: what do you mean may hit? what is the -- do the math. [ laughter ] what is the math on that one? >> well, first it's going to skim by the earth in 2029 and it's going to graze the atmosphere. that's the question mark. we don't know how much friction it's going to encounter. that cannot be factored relyibly. when it grazes the atmosphere on the second pass in 2036 there's a window of opportunity where the thing could actually hit the earth even though it's still very small. >> stephen: because of the friction it encounters on 2029. >> that's right in the second pass. >> stephen: can we lubricate the earth in some way so there's not so much friction? [cheers and applause] and just duz -- [cheers and applause] >> the russians have taken this seriously. >> stephen: of course, they would. they almost got tagged. >> they said we have to maintain serious propals. maybe in 2029

it's just that the earth is curving under. let me give you a fact that a geography teacher can tell you about. if you go out 8 kilometers, that's 8,000 meters this way, you'll find out there is a five meter vertical drop. you will be 5 meters higher than you were over here. we live in a world that for every 8 kilometers you go out, tangent-wise, there's a 5 meter drop. that's all i'm saying. but that 5 meters turns out to be interesting, because we've learned something about 5 meters, gang, haven't we? what have we learned about 5 meters? let's suppose we take this laser, throw it away and we put a cannon, a cannon, newton's cannon. we'll put it right here and we fire a cannonball. is that cannonball gonna follow that straight, straight path? the answer begins with an n. hc? how come? because it's not beginning with a g. don't understand it very well but we have it a little bit together. what is it called? - gravity. - gravity. gravity is gonna pull which way, up or down? - down. - down. watch. let's suppose i fired the cannon

point in the future pose a threat to the earth. although today it doesn't. it just raises our interest and our awareness about these objects. >> conrad, thank you very much. if you want to learn more about this asteroid chabot will be opening the observation deck here. it will be open from 7:00 to 10:00. reporting live lorraine blanco. >>> passengers who are on that disabled carnival cruise ship are waking up in hoe tale rooms. the ship docked in mobile, alabama. here's a live picture of the ship sitting here after several days at sea with no electricity overflowing toilets and shortage of food. coming up in four minutes, we will go back to alabama and get a live report there. >>> over night news san francisco police say they were forced to shoot at a man who was driving a stolen car. it happened during a chase that ended in a violent crash in downtown san francisco. ktvu tara moriarty has been on the story since 4:30. you are back now. there is new information about the gunfire. >> reporter: that is right. we are here at fifth and

what about the one that hit the earth? that was closer. >> i think it is 1 in 1200 chances it will do that. we have facts and figures. it is fascinating to some of us. chad, you'll be back. let me move on and talk about this story. the man known as blade runner breaking down in court. oscar pistorius is charged with the valentine's day shooting of his model girlfriend reeva steenkamp. >> such a devastating shock that her whole life, what she could achieve, never came to fulfillment and she's with the angels and that's all i can say to you folks. >> now, take a look at this photo. this is surfacing on his twitter page. pistorius spending an afternoon at the shooting range. the double amputee rose to international fame when he ran on carbon fiber blades, just this past summer in london, at the olympics. he is seen as the humble hero in south africa. his girlfriend, reeva steenkamp, was a law school graduate who recently appeared on the cover of the men's magazine "fhm." i want to bring in errol barnett in johannesburg. what

most media hours break up before they fall to earth. teors break-- meet up before they fall to earth. >> then as well as government has released these first pictures of presidents hugo chavez following his latest cancer surgery. he had not been seen in public since he went to cuba for his fourth round of treatment in december. >> it was the news they had been waiting weeks for supporters gathered to celebrate. the 58-year-old president has not been seen in over two months. in these first images, he is picture posing with his daughters. >> i was waiting for those pictures. when i saw the picture, i began to thank god for this miracle. some people did not believe he is alive. >> every day, we are praying, wishing him to come back because we need him. there is no one like him in the world. >> the government says the president is still recovering from a respiratory infection. when his son-in-law spoke on state television, he reassured viewers that he is still leading the country. >> he communicates perfectly well and he makes himself unders

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asteroids that orbit near the earth and might at some point in time in the future strike the earth so nasa is aware of where more than ninety percent of these things are so far none of these asteroids is projected to hit the earth if one of them were projected to hit the earth at some time in the future then we would want to know about it this far in advance as possible we need to be able to study this object we need to be able to know exactly what it's made of is that rubble is that a solid piece and be able to devise a strategy for how to deflect it the farther ahead you know about these problems the better your opportunities are for being able to mitigate them all you need to do if you can get to these asteroids quickly enough is just tweak it and then it'll miss the earth by a great distance by the time you know if finally reaches here and when you say tweak it you know hollywood portrays kind of our defense mechanism as nuclear weapons being shot out and the word in these objects in space i mean like what are we talking about here when we're talking about deflecting these kind of

the earth or come into the earth's atmosphere and explode like this on the average of once a century there are other asteroids a larger one flew by the earth also today had its closest approach over indonesia and came in even closer than our geostationary satellites objects like that might impact the earth on average once every one thousand two hundred years so you know much less often usually they come in over uninhabited areas they don't do a lot of damage what about the threat i mean what i mean what governments prepare our arc of prepared to deal with is that something really is more lean at the earth then going to hit it you know so nasa has a program that's looking for near earth objects these are our small asteroids that orbit near the earth and might at some point in time in the future strike the earth so nasa is aware of where more than ninety percent of these things are so far none of these asteroids is projected to hit the earth if one of them were projected to hit the earth at some time in the future then we would want to know about it this far in advance as possible we n

the moon is actually about a quarter million miles away from the earth. what is close to the earth?t levels. the furthest ones out are 22,000 miles away from us and this asteroid came streaking past the southern hemisphere and cut partially through that very group. if you look at the earth over here and satellite, it really was pretty close in those terms. now, it wasn't a big threat because pretty close is pretty far away in space terms and earth terms and it wasn't really that big. when you think about it, this thing was only about 50 yards long. it was traveling about 18,000 miles an hour. if it had hit earth, it would have exploded with more than two million tons of dynamite. but there is no real chance that it was going to do that. scientists are watching it closely. kate. >> when you talk about the two million tons of -- >> two million tons. >> what kind of damage would that have done if it had been heading towards earth? >> you know, it's interesting when you talk about that because we actually have an example of what that would do. many, many, many years ago there was a mete

the feeling was like the earth shattering we thought a military jets may have crashed or that it was some manmade disaster so it was a relief to find out it was a natural phenomenon and while. there i was told that a plane crashed right into our building then we were told that a wall has been partly dislodged and metal structures inside were banned by the blast wave it was a very scary over twelve hundred people were injured including over two hundred children but thankfully these are minor injuries and related mostly due to all this glass flying around caused by these explosions. well as you can see some spectacular footage there of this initial speculation as to the causes of the flashes in the sky went as far as suggesting a nuclear disaster may be to blame well earlier i discussed with r.t. is lindsey france why exactly people did fear the worst. if you look at the area and its history you begin to understand why people are actually expressing relief that the fact that this was a rock falling from the sky and not a nuclear disaster there are seven nuclear fuel plants in that area

the earth or come into the earth's atmosphere and explode like this on the average of once a century there are other asteroids a larger one flew by the earth also today had its closest approach over indonesia and came in even closer than our geostationary satellites objects like that might impact the earth on average once every one thousand two hundred years so you know much less often usually they come in over uninhabited areas and they don't do a lot of damage what about the threat i mean what i mean what governments are arc of prepared to deal with is that something really is a core lean at the earth then i'm going to hit it you know so nasa has a program that's looking for near earth objects these are our small asteroids that orbit near the earth and might at some point in time in the future strike the earth so nasa is aware of where more than ninety percent of these things are so far none of these asteroids is projected to hit the earth if one of them were projected to hit the earth at some time in the future then we would want to know about it this far in advance as possible we

objects like this might pass by the earth or come into the earth's atmosphere and explode like this on the average of once a century there are other asteroids a larger one flew by the earth also today had its closest approach over indonesia and came in even closer than our geostationary satellites objects like that might impact the earth on average once every one thousand two hundred years. so you know much less often usually they come in over uninhabited areas they don't do a lot of damage what about the threat i mean what i mean what governments are our government prepared to deal with this if something really is a poorly at the earth then i'm going to hit it so nasa has a program that's looking for near earth objects these are our small asteroids that orbit near the earth and might at some point in time in the future strike the earth so nasa is aware of where more than ninety percent of these things are so far none of these asteroids is projected to hit the earth if one of them were projected to hit the earth at some time in the future then we would want to know about it this far in

those are only observable in a few days of earth. this one actually slipped by our notice and came into the atmosphere. >> others are under a microscope so to speak. >> nasa monitors 9,000 asteroids and the big ones, a thousand of those, we monitor quite carefully. we call those potentially hazardous objects and look at their orbits and there are many hundreds before we have to worry about close approaches by those objects. >> that is good news. not as good for russia today. the president has ordered aid to be sent to the area and schools are closed because it is zero and the windows are broken. >> right now, nasa is watching for another event unrelated to the meteor, a giant 150' asteroid will fly by earth in the next half hour. observatories around the earth are pointing telescopes in the direction of the asteroid. amy joins us live from the laboratory in oakland where there is a party going on. amy? >> the party will be tonight when we can see it, closest to the earth in the next half hour but we cannot see it. it is so light. the

the earth or come into the earth's atmosphere and explode like this on the average of once a century there are other asteroids a larger one flew by the earth also today had its closest approach over indonesia and came in even closer than our geostationary satellites objects like that might impact the earth on average once every one thousand two hundred years so you know much less often usually they come in over uninhabited areas and they don't do a lot of damage what about the threat i mean what i mean what governments are arc of prepared to deal with is that something really is more lean at the earth then going to hit it you know so nasa has a program that's looking for near earth objects these are our small asteroids that orbit near the earth and might at some point in time in the future strike the earth so nasa is aware of where more than ninety percent of these things are so far none of these asteroids is projected to hit the earth if one of them were projected to hit the earth at some time in the future then we would want to know about it this far in advance as possible we need

of the earth.ust passing through territory's atmosphere that really makes the difference. >> hakeem, address the noise, the noise factor, the sonic boom to the effect of a bomb. >> yes. so if you have an object that moves through a medium like the air at faster than the speed of sound, then what happens is that the air molecules don't know how to get out of the way, right? so if you look at a boat or a ship passing by through the water, it leaves a wake. and so any object that passes through the atmosphere is also going to leave a wake of pressure waves. so what happens is when you move faster than the speed of sound, the molecules in front don't get out of the way until that pressure and that energy build up in front, and it leaves a cone that we call the mock cone. and when that cone passes over your place on the ground, that's when you have a sonic boom. and that's all that built-up energy that is passing over you. >> and meanwhile, we have an asteroid about the size of a football field passing

has just passed earth so we have surviveed!

the earth or come into the earth's atmosphere and explode like this on the average of once a century there are other asteroids a larger one flew by the earth also today had its closest approach over indonesia and came in even closer than our geostationary satellites objects like that might impact the earth on average once every one thousand two hundred years so you know much less often usually they come in over uninhabited areas they don't do a lot of damage what about the threat i mean what i mean what governments are archippus prepared to deal with this if something really is a poorly in at the earth then i'm going to hit it you know so nasa has a program that's looking for near earth objects these are our small asteroids that orbit near the earth and might at some point in time in the future strike the earth so nasa is aware of where more than ninety percent of these things are so far none of these asteroids is projected to hit the earth if one of them were projected to hit the earth at some time in the future then we would want to know about it this far in advance as possible we

the earth or come into the earth's atmosphere and explode like this on the average of once a century there are other asteroids a larger one flew by the earth also today had its closest approach over indonesia and came in even closer than our geostationary satellites objects like that might impact the earth on average once every one thousand two hundred years so you know much less often usually they come in over uninhabited areas they don't do a lot of damage what about the threat i mean what i mean what governments are argument prepared to deal with is that something really is more lean at the earth then i'm going to hit it so nasa has a program that's looking for near earth objects these are our small asteroids that orbit near the earth and might at some point in time in the future strike the earth so nasa is aware of where more than ninety percent of these things are so far none of these asteroids is projected to hit the earth if one of them were projected to hit the earth at some time in the future then we would want to know about it this far in advance as possible we need to be a

the earth or come into the earth's atmosphere and explode like this on the average of once a century there are other asteroids a larger one flew by the earth also today had its closest approach over indonesia and came in even closer than our geostationary satellites objects like that might impact the earth on average once every one thousand two hundred years so you know much less often usually they come in over uninhabited areas they don't do a lot of damage what about the threat i mean what i mean what governments are arc of prepared to deal with this if something really is a poorly in at the earth then going to. has a program that's looking for near earth objects these are our small asteroids that orbit near the earth and might at some point in time in the future strike the earth so nasa is aware of where more than ninety percent of these things are so far none of these asteroids is projected to hit the earth if one of them were projected to hit the earth at some time in the future then we would want to know about it this far in advance as possible we need to be able to study this

we now see them until they enter the earth's atmosphere, and did you enter the earth's atmosphere morerequently than we realize i think. and we have estimates that it may be this is a once in a century they were once in a decade thing. my not always happen over a popularized part of the earth, but there are going to happen. they do cause damage and they're very dangerous. lou: we thank you for being with us. appreciate. >> thank you very much. lou: afford a crews turned into eight. luxury turned into a painful ordeal. we all knew lawsuits would be solely the result. today that is what happened. carnival cruise lines set by its first lawsuit. this is -- this is the first lawsuit from that nightmare. a passenger from texas alleging they had to endure horrifying conditions, including being forced to wait -- wade through human waste from overflowing toilets for more than 3,000 passengers to endorse that, well, that trip from hell. then offered a refund. transportation expenses for future cruise credit and $500 in compensation. they also received an apology from carnival and the cruise line