I'm job bachelor with Bob Zimmerman, who keeps the website behind the black.

There's great expectation for manned space.

We go now to robot space, especially the detection of a comet with a strange core. I'm not quite sure what this means, Bob.

All right, so this is a comet that's been circling the sun in its present orbit for about 1,500 years.

And in its most recent flyby of the sun, astronomers using data from both the Geryl Swift

telescope and the Hubble Space Telescope, both in orbit, they detected what appeared to be

the spin of the nucleus of the comet, like the rotation of the Earth, the rotation,

it appeared to slow down and then reverse direction.

This would be like the Earth, which rotates east to west, suddenly slowing down and

going west to east, going backwards.

And what they think was going on is that the nucleus, after 1500 years

of flying past the sun, has sublimated so much material off. It's gotten small, very small.

And so that the thrust of the stuff being thrown off it as it's heated up was enough to slow

the rotation down and reverse the direction.

The first time they've actually seen this.

It's unusual because most of these comments, when the nucleus starts to get small, it breaks up.

This is an unusual and it didn't break it, but just kept getting smaller and smaller until the thrust from the material being thrown off is able to change its rotation

as it does it. Very cool and very interesting, John. Web and Hubble, look at Saturn, and what did

they see? They see pretty pictures and also some more data. We have nothing near Saturn since

Cassini's project ended in 17. So we can only look at it from a

distance. And using Hubble, we get great optical images, and they're using Hubble regularly

to monitor the weather on Saturn. So they decided to use Webb's infrared data to take a close look

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