i want to bring in one of the astronauts, chris hadfield. he's also the author of a book "an astronaut's guide to life." he joins us now via skype. i have to ask you now, how serious is the situation? >> the problem they're fixing is pretty serious. they had to power down much of the station. it put as lot of the science they're doing on hold. it's not really life-threatening, but it's definitely something you don't want to be living that way on station. they're getting there. the first spacewalk went well and red for the next one in a couple of days. >> the other issue that they're talking about is the spacesuit. can you talk about that and explain the situation? >> you know, outside in the sun, it's about plus 300 degrees fahrenheit, so the suit has to be cooled. and the cooling system in that suit while they were coming back in yesterday may have got a littli little waterbury the cooling system. so just to make sure they're ready in two days they're swapping out that suit. there are three suits on board. they're going make sure the guys h

chris hadfield introduced millions of people to life and research on the station earlier this year. ♪nd songs written and recorded in space and as prolific photography, a hugely popular thing online. the station is expected to be operational for the next 15 years, and in that time it's hoped that scientific findings and the new technologies developed will eventually justify the cost. >>> back here on earth, that was al jazeera reporting. here's some other interests facts about the international space station. it travels at more than 17,000 miles per hour. it circles the earth every 90 minutes. the international space station is roughly the same size as a football tealed. it weighs 925,000 pounds, and if you need a place to stay, it has more living spacious than an average six-bedroom house. last year the crew decided to decorate putting up a christmas tree but hung it upside-down from the ceiling to keep it from getting away. if you want to wish the crew a merry christmas, send an e-card through nasa's website. that's it for us here on "america tonight." if you'd like to comment on an

chris hadfield, thank you so much. so fascinating to hear your perspective as an astronaut.join fredricka whitfield live at noon to talk more about the emergency space walk. >>> some target customers say they've been robbed by hackers. >> i had gone to target the saturday before the money started coming out. >> and millions of target shoppers could be affected. now the retail giant is saying, sorry. but will that be enough? we'll look at how you can protect your financial information. that's next. ♪ [ male announcer ] every time you say no to a cigarette, you celebrate a little win. nicorette mini delivers fast craving relief in just 3 minutes. double your chances of quitting with nicorette mini. in just 3 minutes. hall we do is go out to dinner.? that's it? i mean, he picks up the tab every time, which is great...what? he's using you. he probably has a citi thankyou card and gets 2x the points at restaurants. so he's just racking up points with me. some people... ugh! no, i've got it. the citi thankyou preferred card. now earn 2x the points on dining out and entertainment,

. >> it's very dynamic, commander chris hadfield, it's a pleasure to have you on the show today. >> thanks to speak with you. >>> and still ahead, a tweet caused an internet meltdown. now a pr executive is in hot water. it's a story you don't want to miss. all that and much more coming up next. >>> and "sg md" is just moments away. sanjay? what do you have in store for us this week? >> rosa, ahead on "sg md," all your medical news plus pastor joel osteen, will talk about the power of prayer this holiday season. >>> and we got the top five things you should absolutely do this week to make your holiday meals healthier. celebrity chef richard blaze will show us. hey there, i just got my bill, and i see that it includes my fico® credit score. yup, you get it free each month to help you avoid surprises with your credit. good. i hate surprises. surprise! at discover, we treat you like you'd treat you. get the it card and see your fico® credit score. so you can see like right here i can just... you know, check my policy here, add a car, ah speak to customer service, check on a claim...you know, a

. >> astronaut chris hadfield, i appreciate you taking time to talk with us. >> nice to talk with youeaming of a white christmas with your family, a lot of people will get white stuff and more. if you are heading to your grandmother's house, by road or car, you might see plenty of scenes like this with the icy roads and all those slick conditions. >> yeah, those icy roads are causing problems in kansas and missouri. crashes and overturned trucks there. missouri officials are saying emergency crews have been working all night on the roads. >> more than 85 million people are expected to drive to the holiday destination. >> nick valencia joins us from kansas city, missouri with more on the brutal winter storm. nick. >> reporter: good morning, pamela and victor. it has gotten colder in kansas city. 21 degrees. the weather feels like 14 degrees. we have seen light snow flurries through the country's mid section. that is where we will see the brunt of the storm. from cars skidding on frozen roads and some flipping over, to flight delay at the nation's airports and expected power out ages. i