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Carl Sagan born 92 years ago today

Carl Sagan was born on November 9, 1934. He contributed to science and helped millions around the globe see why astronomy matters.

EarthSky Voices

November 9, 2026

Crew emerges from Mars habitat simulation after yearlong test

On October 31, 2026, 4 participants in NASA's Mars habitat simulation emerged after 1 year of testing for what astronauts might encounter on a visit to Mars.

Kelly Kizer Whitt

November 4, 2026

Dark sky conference: Under One Sky, November 6-7

On November 6-7, 2026, DarkSky International will hold a virtual dark sky conference called Under One Sky. Learn more about it and light pollution here.

Kelly Kizer Whitt

November 3, 2026

November birthstone: Choose from either topaz or citrine

The November birthstone, topaz, comes in lots of colors. It's a much-loved gemstone in jewelry, with myths that date to ancient times. Or choose citrine.

Editors of EarthSky

November 1, 2026

Daylight Time ends Sunday: 7 tips to help you adjust

Daylight Time ends on November 1, 2026. Here are 7 tips from the American Academy of Sleep Medicine to help you adjust to the time change.

Deborah Byrd

October 30, 2026

Halloween is an astronomy holiday. It’s a cross-quarter day

A cross-quarter day falls between an equinox and a solstice. Halloween is the year's 4th cross-quarter day and the spookiest of them all.

Bruce McClure

October 30, 2026

Spooky ghost lights: Believe in them if you dare

Ghost lights are strange lights seen over swamps or bogs. Here are some popular places known for ghost lights. Believe in them ... if you dare!

Deborah Byrd

October 29, 2026

Why do dolls creep us out? It’s the uncanny valley effect

For many, dolls creep us out. Their lifelike - but not quite human - aspect can trigger the uncanny valley effect. Hear more from scientists about this effect.

Kelly Kizer Whitt

October 27, 2026