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COURTESY OF J. TARDUNO
Shields Up: Magnetized Rocks Push Back Origin of Earth's Magnetic Field
Earth's robust magnetic field protects the planet and its inhabitants from the full brunt of the solar wind, a torrent of charged particles that on less shielded planets such as Venus and Mars has over the ages stripped away water reserves and degraded their upper atmospheres.
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Mars's Environment Shown to Be Hostile, but Not Untenable for Earthly Microbes
A test of bacterial survivability points to possible avenues for microbial survival on Mars, assuming life--and specifically Earth-like life--ever developed there -
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Wild Ride: Comet Sample May Help Constrain the Early Evolution of the Solar System
A particle from Comet Wild 2, returned to Earth by the Stardust spacecraft, appears to have led a long and migratory life -
In-Depth Reports
Stimulating Science: Following the Recovery Money
One year ago, Congress passed and President Barack Obama signed the American Recovery and Reinvestment Act into law, which handed out billions of dollars for science, health, energy and other research. How is that money being spent? -
Expeditions
In search of the eastern tropical Pacific's chlorophyll maximum
Meteorite That Fell in 1969 Still Revealing Secrets of the Early Solar System
Down to Earth: Technique Lets Ground-Based Telescopes Parse Exoplanet Atmospheres
Just a Phase: Enceladus's Mysterious Behavior May Be Transient
A galaxy of new worlds: Dispatch from the American Astronomical Society meeting
Follow-Up Observations Highlight Uncertainties in Exoplanet Research
Kepler Spacecraft Spots 5 New Exoplanets
10 Science Letdowns of the New Millennium [Slide Show]
Shining Examples: 10 Bioluminescent Creatures that Glow in Surprising Ways [Slide Show]
Earth-Like Planets May Be Made of Carbon
Worlds Away: Astronomers Begin to Uncover Nearby "Super-Earths"
Looking for Life in the Multiverse
Shields Up: Magnetized Rocks Push Back Origin of Earth's Magnetic Field
Mars's Environment Shown to Be Hostile, but Not Untenable for Earthly Microbes
Wild Ride: Comet Sample May Help Constrain the Early Evolution of the Solar System
Meteorite That Fell in 1969 Still Revealing Secrets of the Early Solar System
Looking for Life in the Multiverse
Stimulating Science: Following the Recovery Money
Triple Helix: Designing a New Molecule of Life
Down to Earth: Technique Lets Ground-Based Telescopes Parse Exoplanet Atmospheres
Worlds Away: Astronomers Begin to Uncover Nearby "Super-Earths"
A galaxy of new worlds: Dispatch from the American Astronomical Society meeting
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Shields Up: Magnetized Rocks Push Back Origin of Earth's Magnetic Field
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