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Agreed with that recommendation. she's reviewing some options right now. but it certainly does not look good. let me break down the problem for you, sara. so this is our model of the sls rocket. you have the orion capsule on top which will some day carry astronauts to the moon, hopefully, if this thing ever gets off the launch pad. this is the sls rocket. the problem is happening right here, where the orange meets the white on the core stage of the rocket. they're trying to fuel it with this super cold liquid propel enter. liquid hydrogen is going through a line right here at negative 420 degr...

Have gone. nasa is going to lose contact with orion when it is on the far side of the moon. it will be circling the moon for about a week. to get back to earth, they are going to use a lunar gravity assist slingshot. they're gonna fire their own engines. they will come hurtling back to years. again, faster and harder than ever before. big test for those heat shields. tiffany, i want to show you a little bit of all the components of the rocket. i will show you how we'll get around in there. these are the most efficient engines ever built. these boosters, each one of them is 17 stories tall. eac...

Gigantic fireball on cape canaveral. they caught it in time. >> this is why you do the unmanned missions like they're doing today. brianna? >> it's a 42-day mission, this is supposed to be. they have to get it right from the beginning here. let's get to cnn's kristin fisher live for us at kennedy space center with news that this launch has just been scrubbed. kristin? >> reporter: brianna, definitely some disappointment at the kennedy space center, but, you know, we knew this was going to be a very likely outcome of this very first attempt to get this incredibly complicated rocket off the laun...

Engineers are troubleshooting right now is they've seen a line of frost in what's called the inter tank. there is not an inter tank on this exact model but it would be found right about here in the middle section of the core stage of the rocket. it is where the super cold liquid propellant is separated between the liquid hydrogen and the liquid oxygen. they don't know if it's a crack, all they can see is a line of frost. that is why we are kind of in a hold right now and we don't know if this launch is going to go today. we've also had two other issues, we've had lightning delays, we've had a ...

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