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Life, Unbounded

Life, Unbounded

Discussion and news about planets, exoplanets, and astrobiology

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

The Failure of Phobos

A new explanation for the strange grooves on the surface of the martian moon Phobos suggests that the entire satellite already shows signs of how it will eventually be destroyed.

November 12, 2015 — Caleb A. Scharf

The Moons of Pluto

Pluto's small moons are revealed in the latest image data and analysis from New Horizons' historic encounter—these may be the best view humanity ever gets of these distant objects

October 29, 2015 — Caleb A. Scharf

Early Origins for Life Raises Major Planetary Puzzles

A recent claim for evidence of life on Earth as early as 4.1 billion years ago runs headlong into prevailing theories about a period of heavy asteroid impacts and the reshuffling of the young solar system's orbital architecture...

October 22, 2015 — Caleb A. Scharf

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