On the night of October 5-6, 1923, Carnegie astronomer Edwin P. Hubble took a plate of the Andromeda Galaxy (Messier 31) with the Hooker 100-inch telescope of the Mount Wilson Observatory. This plate, ...

Experts from UNH explain how rare the 3.8 magnitude earthquake was and the likelihood of significant aftershocks.

Multiple major US cities could be mostly underwater in just 75 years, a startling new study predicts. The researchers ...