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- Planetary Science
Red Planet Roundup: Opportunity knocks; Spirit revives
The NASA rover Opportunity bounced onto an equatorial Martian plain early on Jan. 25 and found an intriguing outcropping of rocks on the other side of the planet from where its ailing but recovering twin, Spirit, had recently stalled.
- Chemistry
Old Martian questions may have new answer
Researchers simulating Martian conditions in a test tube discover a likely reason why no organic molecules have yet been found on the surface of the Red Planet.
- Planetary Science
Martian Invasion
If all goes according to plan, three spacecraft—one in December, two in January—will land on the Red Planet, looking for evidence that liquid water once flowed on its surface.
- Earth
Parting Shots
Data collected during an 18-day barrage of major solar flares late last year—including a record-setting coronal mass ejection on Nov. 4—will help scientists refine models of flare formation and behavior.
- Humans
Science News of the Year 2004
A review of important scientific achievements reported in Science News during the year 2004.
- Astronomy
Enlarging a Mars photo album
A new set of more than 18,000 images of Mars, posted online in early October, features the sharpest picture of the Red Planet ever taken by an orbiting spacecraft.
- Astronomy
Observatory on a suicide mission
Fearing that its 9-year-old workhorse, the Compton Gamma Ray Observatory, could plunge uncontrollably through the atmosphere if one more of its gyroscopes fails, NASA has decided to crash the spacecraft into the Pacific Ocean in early June.
- Humans
Science News of the Year 2000
A review of important scientific achievements reported in Science News during the year 2000.
- Tech
Mind-Expanding Machines
Researchers have designed computer systems aimed at amplifying human thought and perception, such as a new type of cockpit display for aircraft pilots that exploits the power of peripheral vision.
- Astronomy
Taste of a Comet: Spacecraft samples and views Wild 2
Pummeled by debris, a NASA spacecraft last week snatched up dust samples while taking the sharpest images ever of a comet's icy core.
- 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
Death of a pioneer
Pioneer 10, the first spacecraft to reach the fringes of the solar system, appears to have sent its last feeble signal to Earth on Jan. 22.
