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
Jul 28, 2015 01:30 PM ET
Crash investigators have found Scaled Composites responsible for the fatal SpaceShipTwo accident that claimed the life of the vehicle's test pilot last year.
Jul 24, 2015 05:00 PM ET
NASA’s New Horizons spacecraft has given scientists their first hint about why Pluto has a reddish hue.
Jul 24, 2015 11:40 AM ET
See Pluto's composition and complex textures in this new 'enhanced' observation of the dwarf planet.
Jul 23, 2015 01:10 PM ET
NASA’s Kepler space telescope has found the closest match yet to a world that is similarly sized to Earth and circling a sun-like star at the right distance for liquid surface water, a condition believed to be necessary for life, scientists said Thursday.
Jul 23, 2015 02:56 AM ET
Newly released images taken by NASA's New Horizons spacecraft show a second range of mountains in Pluto's heart-shaped, bright region, named Tombaugh Regio.
Jul 21, 2015 12:00 AM ET
A steel strut holding a bottle of helium likely gave way, causing the liquid oxygen tank in the upper-stage of a SpaceX Falcon 9 rocket to over-pressurize, triggering an explosion minutes after launch last month, company chief executive Elon Musk said Monday.
Jul 17, 2015 04:45 PM ET
Scientists with NASA’s New Horizons mission are puzzling over how a world that never gets more sun than Earth at twilight is reshaping its surface, filling in craters, cracking its crust and building towering mountains and smooth hills.
Jul 15, 2015 05:20 PM ET
Little Pluto, smaller than Earth’s moon, has a least one giant mountain range, with water ice the only available building material.
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