For the first time, astronomers have observed in visible light a cataclysmic cosmic event that generated gravitational waves detected on Earth.
Oct 16, 2017 in Astronomy
For three decades, astronomers thought that only Saturn's moon Janus confined the planet's A ring - the largest and farthest of the visible rings. But after poring over NASA's Cassini mission data, Cornell astronomers now ...
39 minutes ago in Space Exploration