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

Astronomy

Hubble spots interstellar invader Comet 3I/ATLAS for the first time

Space.com - Tue, 07/22/2025 - 6:00am
The long-serving space telescope saw the third interloper to enter the solar system from beyond its limits late on Monday morning (July 21).
Categories: Astronomy

Male Birth Control Pill YCT-529 Passes Human Safety Test

Scientific American.com - Tue, 07/22/2025 - 5:00am

A hormone-free pill, called YCT-529, that temporarily stops sperm production by blocking a vitamin A metabolite has just concluded its first safety trial in humans, getting a step closer to increasing male contraceptive options

Categories: Astronomy

The Day Earth Smiled

NASA Image of the Day - Mon, 07/21/2025 - 12:22pm
On July 19, 2013, in an event celebrated the world over, NASA's Cassini spacecraft slipped into Saturn's shadow and turned to image the planet, seven of its moons, its inner rings, and, in the background, our home planet, Earth.
Categories: Astronomy, NASA