And now, it's time for Flora's pick of the week, our video that we have on our website. Flora Lichtman's here. Hi. Welcome back. Good to see you this week.


FLATOW: What's our video pick of the week?

LICHTMAN: This week, I think, really, it's a fun one. We have these two researchers, and about 20 years ago - they're engineers - they were doing experiments on NASA's low-gravity aircraft, which kind of does these flight parabolas...

FLATOW: Right.

LICHTMAN: That gives you, like, 20 seconds...

FLATOW: Weightlessness.

LICHTMAN: Of weightlessness, 20 seconds of weightlessness. And they were doing these experiments, and they had some extra time on board, and they thought to themselves, what would happen if we pop a water balloon?

FLATOW: Ooh. Pop the water balloon in weightlessness.

LICHTMAN: In weightlessness.


LICHTMAN: And the results, I think, are pretty visually spectacular and you can see them on our website.

FLATOW:, video pick of the week.

LICHTMAN: And you may even learn something. So, it's not just cool to look at.

(Soundbite of laughter)

FLATOW: It's cool to look - I watched it and it's amazing. Some of the, you know, the results that you would not expect that would happen to weightlessness.

LICHTMAN: Yes. I mean, they try a lot of things, hitting it with ping-pong paddles, mixing the liquids together. It's like a water-balloon fight in space.

FLATOW: In space, but in a safe place, not up there in the shuttle or any place where the water could get around. But it's right there in the Vomit Comet.

(Soundbite of laughter)


FLATOW: Right where they practice the weightlessness there.


FLATOW: Up on the plane. Thank you, Flora.


FLATOW: That's up there, Flora's Science Friday pick of the week is up there on and you can watch it and download it, too, if you'd like.

(Soundbite of music)

FLATOW: Our program is produced by Christopher Intagliata and senior producer Annette Heist. Charles Bergquist is our director. Flora Lichtman is our producer for digital media. Our intern is Marley Ashford. Josh Rogosin is our technical director and at the controls here, driving, in New York. We also had help today in Second Life from Lynn Cullins, David Andrews, Jeff Corbin and the University of Denver. If you'd like to write us the old, classic way, pen and pencil, typewriter, Science Friday, 4 West 43rd Street, Room 306, New York, New York, 10036. Also, we're Twittering at Scifritter - that's our Twitter name - S-C-I-F-R-I-T-T-E-R. Also, we're podcasting and blogging and looking for your videos; if you have some great videos that you'd like to send Flora, we could take a look at them and maybe add them to our video collection. Always looking for new videos. Have a great weekend. I'm Ira Flatow in New York.

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