On Oct. 13, 1773, Charles Messier spotted the Whirlpool Galaxy (M51) for the first time. Writing of it a few months later, he ...
On Oct. 13, 1773, a French astronomer named Charles Messier discovered the "whirlpool galaxy," also known as Messier 51, or ...
A waning Moon drifts past Jupiter this week, while early risers will find dazzling views of autumn constellations and ...
See views of The Horsehead Nebula, the Perseus Cluster of galaxies, spiral galaxy IC 342, irregular galaxy NGC 6822 and ...
Hubble captured a breathtaking view of NGC 6000, a spiral galaxy where blue newborn stars shine beside golden, aging ones.