Were the rains enough to ease Southern California’s fire threat? What we know
The recent storm brought some much needed moisture to Southern California without the dangerous mudslides some feared. But ...
Carnegie Institution for Science11h
Hubble's Famous M31 VAR! plate
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, ...