What do Uranus's cloud tops have in common with rotten eggs?

Hydrogen sulfide, the gas that gives rotten eggs their distinctive odor, permeates the upper atmosphere of the planet Uranus - as has been long debated, but never definitively proven. Based on sensitive spectroscopic observations ...

Astronomers discover an M-dwarf eclipsing binary system

Astronomers have found a new eclipsing binary system by analyzing archival survey data and conducting follow-up radial velocity measurements. The newly found binary, designated SDSSJ1156-0207, is composed of two M-dwarf stars ...

Impressive Geminid Meteors to Peak on December 13–14

If it's clear Wednesday night and Thursday before dawn, keep a lookout high overhead for the "shooting stars" of the Geminid meteor shower. That's the peak night for this annual display.

The most ancient spiral galaxy confirmed

The most ancient spiral galaxy discovered to date is revealing its secrets to a team of astronomers at Swinburne University of Technology and The Australian National University (ANU), part of the Australian Research Council ...

Earth-based views of Jupiter to enhance Juno flyby

Telescopes in Hawaii have obtained new images of Jupiter and its Great Red Spot, which will assist the first-ever close-up study of the Great Red Spot, planned for July 10. On that date, NASA's Juno spacecraft will fly directly ...

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