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Posts by
Editors of EarthSky
Super star creates holiday light show
A celestial wreath of reflective dust illuminated by a glittering star.
December 25, 2013
A billion stars here we come! Gaia galaxy surveyor lifts off
Gaia is designed to make accurate measurements of the positions and motions of 1% of the total population of roughly 100 billion Milky Way stars.
December 19, 2013
New colorized images of asteroid Vesta
"No artist could paint something like that. Only nature can do this." - Astronomer Martin Hoffman
December 18, 2013
Milky Way galaxy has four arms again
A debate has been raging about whether our galaxy has four spiral arms, or two. A 12-year study of massive stars suggests that it has four.
December 17, 2013
Long-lasting greenhouse gas breaks all the records
A newly identified greenhouse gas shatters all other records for the chemical’s potential to contribute to climate change.
December 16, 2013
Water vapor venting from Jupiter’s moon, Europa
If these plumes vent from Europa's subsurface water ocean, future scientists won't need to drill into Europa's icy crust to investigate the potential for life in that alien sea.
December 14, 2013
Best view of Saturn hexagon
The Saturn hexagon is a unique six-sided jet stream, a current of air, around Saturn's north pole.
December 6, 2013
Astronomers discover planet that shouldn’t be there
The discovery of a giant planet orbiting its star at 650 times the average Earth-sun distance has astronomers puzzled over how such a strange system came to be.
December 5, 2013
One result of rising ocean acidification: Anxious fish
Increased carbon dioxide uptake by the oceans might be making fish anxious, a new study suggests.
December 5, 2013
Two supermassive black holes in death spiral
Astronomers have spotted what appear to be two supermassive black holes 3.8 billion light-years from Earth, circling each other like dance partners.
December 5, 2013
