All Stories by Ron Cowen
- Planetary Science
Reviewers see red over recent Mars programs
NASA's two most recent missions to Mars failed because they were underfunded, managed by inexperienced people, and insufficiently tested, according to a report released March 28.
- Astronomy
Craft spies new class of gamma-ray sources
Roughly half the 120 unidentified sources of high-energy gamma-ray emissions in the Milky Way—those at midgalactic latitudes—may comprise a new class of objects and originate from a belt of massive stars that lies only a few hundred light-years from the solar system.
- Planetary Science
Unveiling Mars’ watery secret
A new gravity map of Mars has revealed a network of buried channels that billions of years ago may have been on the surface and helped carry water to fill an ancient ocean.
- Astronomy
X-ray telescope vanishes
Astro-E, a Japanese X-ray observatory, fell back to Earth and burned up just after launch on Feb. 9.
- Astronomy
Spacecraft sounds out the sun’s hidden half
By detecting sound waves that have traveled through the sun, two physicists have for the first time found a way to view disturbances on the sun's hidden half, providing a glimpse of stormy weather patterns a week to 10 days before they come into view.
- Planetary Science
Meteoric wallop may have diversified life
A new study suggests that the evolutionary burst on Earth some 540 million years ago occurred around the time that cosmic debris began pummeling our planet at an increasing rate.
- Astronomy
Getting a Clear View
Outfitted with a mirror that flexes several hundred times a second to compensate for the blurring induced by Earth’s atmosphere, one of the world’s sharpest telescopes just got a whole lot sharper.
- Astronomy
Tidal tails tell tales of newborn galaxies
Some streams of gas and dust ripped out of large galaxies appear to form their own galaxies and may provide astronomers with a close-up view of galaxy formation.
- Astronomy
No signal from Mars Polar Lander
A radio signal that NASA hoped came from the vanished Mars Polar Lander has a terrestrial origin, scientists from the space agency and Stanford University have concluded.
- Astronomy
Super fireworks
A blast wave from supernova 1987A, the brightest stellar explosion witnessed from Earth since 1604, has begun lighting up a ring of gas surrounding the explosion.
- Astronomy
Votes cast for and against the WIMP factor
Physicists this week duked it out over a bunch of WIMPs, elementary particles that—if they exist—could solve a decades-old mystery in cosmology and help unify the four fundamental forces of nature.
- Planetary Science
Tryst in space: Craft, asteroid rendezvous
On Valentine's Day, the NEAR spacecraft cozied up to the asteroid 433 Eros, becoming the first craft to orbit a tiny body.
