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Life, Unbounded

Life, Unbounded

Discussion and news about planets, exoplanets, and astrobiology

Walking on Enceladus

Newly released images from the Cassini mission's final close flyby of Saturn's icy moon Enceladus reveal further exquisite details of the surface terrain

January 20, 2016 — Caleb A. Scharf

Salty Ceres, Martian Dunes and Venus at Last

From progress on deciphering the strange features of dwarf planet Ceres to NASA's plans to play with Martian sand and a heroic rescue of Japan's Venus-bound spacecraft, it's been an interesting past couple of weeks...

December 11, 2015 — Caleb A. Scharf

Did the Solar System Just Gain 2 New Worlds?

A pair of scientific papers suggest that the ALMA observatory may have detected 2 new "planet-scale" objects associated with the outer realms of the solar system. But should we be awed or skeptical?...

December 10, 2015 — Caleb A. Scharf

Basic Rocket Science: Sub-Orbital Versus Orbital

As the private space company Blue Origin achieves a 100 kilometer suborbital flight, and a spectacular re-landing of its rocket, it's worth pausing to consider the basic energy requirements of spaceflight from the surface of the Earth...

November 25, 2015 — Caleb A. Scharf

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Scientific American Health & Medicine

Scientific American Health & Medicine