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
May 21, 2015 02:08 PM ET
Newly released pictures, taken when Dawn was about 4,500 miles from Ceres, confirm that the bright areas are patches of sunlight bouncing off ...something.
May 14, 2015 11:04 AM ET
British soprano Sarah Brightman is ending her bid for a visit to the International Space Station, leaving a spot for a Japanese entrepreneur training as her backup to fly instead.
May 14, 2015 02:00 PM ET
Astronomers have found a quartet of quasars embedded in a single cloud of cold gas, a discovery that challenges currently held theories about how these rare objects form.
May 12, 2015 05:19 PM ET
Salt from an underground sea on Jupiter’s moon Europa may be seeping onto the surface, then darkening as it is exposed to radiation.
May 12, 2015 12:49 PM ET
Wednesday’s planned homecoming of 3 space station crewmembers is being delayed while engineers assess if the rocket problem that doomed a cargo ship last month could surface on a similar booster used for human spaceflights.
May 8, 2015 06:13 AM ET
A Russian cargo ship that failed to reach the International Space Station following launch April 28 fell out of orbit Thursday night and burned up in the atmosphere, the Russian space agency Roscosmos reported.
May 7, 2015 02:06 PM ET
The short and ignominious life of the Progress-59 cargo ship is coming to an end, with re-entry into Earth’s atmosphere expected as early as 6:13 p.m. ET today.
May 7, 2015 02:00 PM ET
A robotic spacecraft that circled Mercury detected magnetized rocks, evidence that planet’s still-roiling, liquid metal core likely spawned a global magnetic field as far back as about 3.8 billion years ago.
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