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.

Author Stories
Jan 22, 2015 11:50 AM ET
Are identical twins still identical after one spends a year in space?
Jan 22, 2015 02:00 PM ET
Early results from Europe’s ongoing Rosetta comet mission show the icy body, believed to be a remnant from the formation of the solar system, is far more complex and diverse than scientists expected.
Jan 16, 2015 05:49 PM ET
A new study suggests that at least two more planets are circling the sun far beyond Pluto’s orbit.
Jan 16, 2015 10:29 AM ET
The UK's Beagle 2 Mars lander, which disappeared during a landing attempt over Christmas in 2003, has finally been found by a NASA spacecraft.
Jan 14, 2015 07:50 PM ET
Although possible toxic ammonia leak onboard the International Space Station on Wednesday was a false alarm, how would the crew handle a real emergency on the orbiting outpost?
Jan 12, 2015 11:42 AM ET
British singer Sarah Brightman heads to Russia this week to begin training to fly to the International Space Station.
Jan 9, 2015 11:50 AM ET
Test flights of Virgin Galactic’s SpaceShipTwo are on schedule to begin again this year -- this time with its own pilots, the chief executive of Richard Branson’s space startup said Friday.
Jan 6, 2015 01:15 PM ET
Eight new exoplanets have been discovered, two of which are nearly Earth-sized orbiting within their stars' habitable zones. Continue reading
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