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Sept. 29, 201503:56
  • UP NEXT

    Total Eclipse: Rare solar eclipse passes across North America

    03:47
  • Parts of Indiana experience total solar eclipse

    09:35
  • 'Strange cosmic coincidence': Solar eclipse passes across North America

    08:20
  • 'Special for so many reasons': Science journalist explains more on solar eclipse

    05:47
  • NASA will ‘learn everything we can’ from the eclipse because ‘this is our star’

    10:05
  • NOW: Solar eclipse crosses into U.S.

    06:41
  • Former ISS commander explains why this solar eclipse is so special

    03:37
  • 'Wear the glasses and take it all in': Bill Nye on what you need to know about the solar eclipse

    07:00
  • 'Every total solar eclipse is a rare and amazing event': astrophysicist

    07:23
  • FAA investigating SpaceX's Starship test launch after ending in lost signal

    01:43
  • What scientists could learn from asteroid sample collected by NASA

    01:58
  • Elon Musk seen as working counter to U.S. interests in dealings with Russia, China

    07:37
  • Rupert Friend reveals the camaraderie behind the scenes of 'Asteroid City'

    04:42
  • NASA administrator: The future of space is collaborative

    05:20
  • SpaceX launches second private spaceflight for citizens to ISS

    03:32
  • Living Black History: A Conversation with Dr. Mae Jemison

    05:33
  • What's in the sky? Former NASA astronaut José Hernández explains.

    05:07
  • 'We have crowdsourced the invasion of aliens' Neil deGrasse Tyson on flying objects

    04:49
  • Discussing the Impact of Climate Change: NASA’s New Project

    06:59
  • UAE launches first Arab-built moon rover

    04:28

Water on Mars, what's next?

03:56

Ret. NASA astronaut Captain Mark Kelly talks about his excitement over the discovery, because where there is water, there is life. He also explains how water impacts a potential mission to Mars.