The forces of rotation caused red hot masses of stones to be torn away from the Earth and to be thrown into the ether, and this is the origin of the stars.

— Anaxagoras 428 BC

Kevin's blog

Hubble at 30: Three Decades of Cosmic Discovery


This year’s International Observe the Moon Night is on Oct. 20. On that night the 11-day-old waxing gibbous Moon will rise in the late afternoon and set before dawn. Sunlight will reveal most of the lunar surface and the Moon will be visible all night long. You can observe the Moon’s features whether you’re observing with the unaided eye, through binoculars or through a telescope.

A Trip Through the Milky Way

A Trip Through the Milky Way