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Halley’s Comet is Edmond Halley’s namesake. Happy birthday, Edmond!
Astronomer Edmond Halley is famous for predicting the return of the comet that we now know as Halley's Comet. Edmond was born on November 8, 1656.
November 8, 2023
Media we love: Totality, The Great North American Eclipse of 2024
Read a book review of "Totality: The Great North American Eclipse of 2024" by Mark Littmann and Fred Espenak. Reviewed by Bruce McClure.
November 5, 2023
Daylight Time ends Sunday: 7 tips to help you adjust
Daylight Time ends on November 5, 2023. Here are 7 tips from the American Academy of Sleep Medicine to help you adjust to the time change.
November 3, 2023
November birthstone: Choose 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. Another choice is citrine.
November 3, 2023
Anticrepuscular rays: How to see them
If you want to see anticrepuscular rays, look carefully opposite the direction of the sun. They are most often seen at sunrise or sunset.
November 1, 2023
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 the 4.
October 31, 2023
What was the Carrington Event, and why does it matter?
The Carrington Event of 1859 was a massive geomagnetic storm triggered by an active sun. People saw auroras at low latitudes bright enough to read by.
October 22, 2023
Solar eclipse photos keep coming, and they’re awesome
Solar eclipse photos from October 14, 2023, still haven't stopped coming in. Here are a few more great ones! Thanks to all who contributed.
October 20, 2023
New AI tool can help find alien life in the solar system
Researchers in the U.S. and Japan have developed a new AI technique that can determine if there is evidence for past or present life, or not, with 90% accuracy.
October 15, 2023
Happy Friday the 13th: It’s the 2nd one in 2023
When a year with 365 days starts on a Sunday, like 2023, it's inevitable Friday the 13th will occur twice. In 2023 Friday the 13th comes in January and October.
October 13, 2023
