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
Mar 25, 2015 11:09 PM ET
NASA plans to launch a robotic spacecraft to pick up a boulder roughly 10 feet in diameter from the surface of an asteroid and nudge it into an orbit around the moon.
Mar 24, 2015 07:00 PM ET
Add nitrogen to the list of potential biological ingredients on Mars sniffed out by NASA’s Curiosity rover.
Mar 23, 2015 03:00 PM ET
Jupiter's early migration through the inner solar system caused gravitational mayhem, but it ultimately settled to allow Earth to form in a relatively quiet neighborhood.
Mar 20, 2015 12:22 PM ET
Scientists are mulling over which of two icy bodies NASA’s New Horizons spacecraft should visit following its Pluto encounter this summer (if NASA can fund it).
Mar 19, 2015 07:00 AM ET
The comet being studied by Europe's Rosetta spacecraft may be made entirely of pebbles, challenging currently held theories of how bodies form in the far reaches of the solar system.
Mar 18, 2015 01:14 PM ET
Unexpected bright spots discovered on the surface of the dwarf planet Ceres may be plumes of ice blasting out into space.
Mar 18, 2015 02:25 PM ET
Scientists using NASA’s Mars-orbiting MAVEN spacecraft discovered a mysterious cloud of dust hundreds of miles above the planet’s surface -- and no explanation for how it got there.
Mar 18, 2015 08:30 AM ET
A study based on 151 multi-planetary systems found by NASA's Kepler space telescope shows that most have a planet -- or two or three.
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