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astrobiology

Victoria Meadows in her garden with her cockatoo.
Thinking Places

Victoria Meadows’ Earthly Visions of Alien Life

A living, breathing garden in Seattle serves as the perfect backdrop to an astrobiologist’s search for life on faraway planets.

astrobiology

Scientists Debate Signatures of Alien Life

Searching for signs of life on faraway planets, astrobiologists must decide which telltale biosignature gases to target.

geophysics

How Life and Luck Changed Earth’s Minerals

Did the minerals on our planet arise in a predictable fashion, or did they result from chance events? The answers could eventually help scientists identify planets likely to harbor life.

Biology

New Twist Found in the Story of Life’s Start

All life on Earth is made of molecules that twist in the same direction. New research reveals that this may not always have been so.

cosmology

Peering Into the Early Universe

Three “extremely large telescopes” poised to begin observations within a decade could help answer some of the universe’s oldest and best-kept secrets.