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Posts by
Editors of EarthSky
Newly discovered most luminous galaxy
Galaxy W2246-0526 shines with the intensity of more than 300 trillion suns. Its central black hole stirs up gas across the entire galaxy.
January 18, 2016
Why does the new year begin on January 1?
New Year's Day is a civil event. Its date isn't precisely fixed by any natural seasonal marker.
January 1, 2016
Ceres’ bright spots likely salt deposits
Mystery solved? Bright spots seen by Dawn spacecraft on dwarf planet Ceres are likely salt deposits, say researchers.
December 10, 2015
Satellite sensors for global fire coverage
A global fire alert from space, FireSat sensors would be able to detect a fire anywhere on Earth within 15 minutes of its start and notify area emergency responders.
November 27, 2015
Mars to lose a moon, gain a ring
Mars’ large moon Phobos is slowly falling toward the planet. In 20-40 million years, it'll shatter, and its pieces will form a Saturn-like ring around Mars.
November 26, 2015
Tiny, ultracool star is super stormy
"If we lived around a star like this one, we wouldn't have any satellite communications. In fact, it might be extremely difficult for life to evolve at all ..." said Harvard astrophysicist.
November 20, 2015
Most Earthlike exoplanet is uninhabitable
Kepler-438b - 470 light years from Earth - ranks highest on the Earth Similarity Index. But radiation from its violent parent star makes it uninhabitable.
November 18, 2015
Mars rover heads for active dunes
No Mars rover has yet visited a sand dune, as opposed to smaller sand ripples or drifts. Curiosity will visit actual Mars dunes in the next few days.
November 17, 2015
Video: Why your body is amazing
Some fun for a Friday, from the guys at AsapScience.
November 13, 2015
