Contributor

We can't change when or how long we live. All that really counts is what we do. Space exploration has technical, political and mental challenges, but rewards us with surprising knowledge. It's one of humanity's noblest endeavors and the focus of my work since 1987.

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Author Stories
Oct 22, 2014 01:00 PM ET
Scientists have found two families of comets in the developing Beta Pictoris star system, located about 64 million light-years from Earth, including one group that appears to be remnants of a smashed-up protoplanet.
Oct 20, 2014 07:00 AM ET
Astronomers using the Hubble Space Telescope have located at least one and possibly three Kuiper Belt objects that NASA’s New Horizons spacecraft can reach after its flyby Pluto next year. Continue reading →
Oct 17, 2014 02:25 PM ET
Hurricane Gonzalo is delaying launch of NASA's next cargo ship to the orbital outpost. Continue reading →
Oct 16, 2014 02:00 PM ET
Saturn's small moon Mimas may have its own subsurface ocean according to some strange measurements made by Cassini.
Oct 14, 2014 04:00 PM ET
Early results from NASA’s recently arrived MAVEN Mars spacecraft show an extensive, tenuous cloud of hydrogen surrounding the red planet, the result of water breaking down in the atmosphere.
Oct 9, 2014 12:57 PM ET
Construction of what is billed to be the most advanced and optically powerful telescope on the planet got off to a rough start this week by protesters objecting to the observatory’s location at the summit of Mauna Kea, on Hawaii’s Big Island. Continue reading →
Oct 8, 2014 11:36 AM ET
During Tuesday's spacewalk, astronaut Alexander Gerst took this awe-inspiring photograph high above Earth. Continue reading →
Oct 3, 2014 12:00 PM ET
A NASA-backed study explores an innovative way to dramatically cut the cost of a human expedition to Mars -- put the crew in stasis.
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