Are we really doing enough to find asteroids, especially the smaller ones that could destroy a city? A private initiative urges a rapid ramp-up of the search effort — but not everyone agrees.
Hotspots on Venus might be researchers’ long-sought evidence for active volcanoes.
Combining a novel technique and a world-class telescope, astronomers have measured the mass of the supermassive black hole at the center of barred spiral NGC 1097.
New ALMA observations reveal low levels of dust in nine early galaxies, suggesting astronomers should revise some of their calculations.
Following on a surprising find reported last year, astronomers have now discovered almost 1,000 dark matter-rich galaxies in the Coma Cluster.
Researchers identify titanium oxide as a potential molecule at work in exoplanet atmospheres.
Telescope users in eastern North America can watch for the thin, invisible dark limb of the Moon to occult the 4.1-magnitude star Theta Librae.
The two brightest planets are gliding closer together in the early evening sky, and their celestial dance culminates with an ultra-close pairing on June 30th.
Stargazing in July is warm and pleasant. After sunset Venus and Jupiter are together in the west and Saturn is low in the south amid the stars of Scorpius.