Diana Hannikainen Named Next Editor in Chief of Sky & Telescope Magazine

Astronomer and science communicator Diana Hannikainen has been named the next Editor in Chief of Sky & Telescope.

Triple Supernova Image Stokes Hubble Constant Controversy

A unique supernova image provides astronomers with an alternative way to measure the universe’s current expansion, hinting that it’s (still) faster than expected.

Europa Clipper Successfully Launches on Multi-Year Mission to Jupiter’s Icy Moon

After reaching Jupiter in 2030, the spacecraft will study Europa to help assess whether it has the conditions necessary to sustain life.

Are Objects from Alpha Centauri Streaming by Earth?

Material ejected from the Alpha Centauri system could be streaming by Earth.

This Week's Sky at a Glance, October 18 – 27

While you're waiting for twilight to dim enough for observing Comet Tsuchinshan-ATLAS this evening, use your binoculars to try for Delta Scorpii glimmering just left of Venus. The Moon rises in late twilight. Once it's well up, look for the Pleiades just to its upper right.

Comet Tsuchinshan-ATLAS Climbs, Brightens and Delights!

Treat yourself to a comet bright enough to see plainly even in moonlight. Tsuchinshan-ATLAS beckons at dusk!

The Sun's Activity Is Reaching a Fever Pitch

The current solar cycle is approaching its maximum.

October Podcast: The Moon’s Waxing and Waning

Come along on a guided tour of the stars and planets that you’ll see overhead during October.

Presented by: Celestron.

AAVSO 113th Annual Meeting

This year’s AAVSO Annual Meeting will be hosted at the U.S. Space & Rocket Center in Huntsville, Alabama.

Beverly Turner Lynds, 1929–2024

Beverly Lynds, a pioneer for women in astronomy and astrophysics, advanced the study of dust-and-gas clouds in the Milky Way.