Space & PhysicsJuly 7, 2011
Supernovae Seed Galaxies with Massive Amounts of Dust
A supernova that went off in 1987 produced large quantities of dust, which may explain why galaxies in the early universe were so dusty
Extraterrestrial Life
The SciencesJuly 1, 2011
From the Editor: Honors and Activities
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June 27, 2011
Planets with Stabilizing Moons May Be Common
Computer simulations show that about 10 percent of planets could have a massive moon that helps to stabilize the planetary tilt. John Matson reports
Space & PhysicsJune 22, 2011
Turf and Surf: Salty Plumes Point to Underground Ocean inside Saturn's Moon Enceladus
The Cassini spacecraft plunged through watery plumes shooting out of Enceladus and got a taste of what is inside the icy moon
EvolutionJune 21, 2011
Unwanted Housemates: Dishwashers Provide Habitat for "Extremotolerant" Fungi
June 16, 2011
From the Shadows to the Spotlight to the Dustbin--the Rise and Fall of GFAJ-1
June 13, 2011
Fragments of Single Meteorite Show Different Chemistry
The Tagish Lake meteorite fragments contain widely varying organic compounds, a sign that chemical reactions were taking place on board the body in space. John Matson reports
Space & PhysicsJune 9, 2011
Dunes, Craters and Ice: Just Another Spring on Mars
Springtime on Mars is quite a bit balmier than the planet's winter season, but it's still plenty icy near the Red Planet's poles.
June 6, 2011
Step Right Up and Guess the Star's Age
A database of stars with known ages and spin rates could let astronomers gauge more stars' ages and find the ones old enough to support planets that could have complex life. John Matson reports
The SciencesJune 1, 2011
Newly Discovered Microscopic Worm Thrives in Gold Mines a Kilometer Underground
High temperature, low oxygen and permanent darkness are no problem for a previously unknown species of nematode
June 1, 2011
Living Interplanetary Spaceflight Experiment--or Why Were All the Strange Creatures on the Shuttle Endeavour?
Space & PhysicsMay 27, 2011
Hope for Future Discoveries Both Near and Far at the American Astronomical Society Meeting