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Posts by
Editors of EarthSky
The Winter Circle: Catch in the morning before dawn
The majestic Winter Circle isn't a constellation. It's an asterism, a giant circle - or hexagon - figure made up of bright stars from several constellations.
August 24, 2025
The return of Sirius in the morning signals seasonal change
A sign of the changing season is the return of Sirius before sunup. Want to make sure you've spotted Sirius? The 3 stars in Orion's Belt point to it.
August 21, 2025
Do you love twilight? The 3 stages explained
Twilight is that magical time between sunlight and darkness. Astronomers, the experts on nighttime, recognize three stages of twilight.
August 15, 2025
Can you see a full circle rainbow? All you need to know
It's possible to see the full circle rainbow, but sky conditions have to be just right. They're most often seen by pilots, who have a good view of the sky.
August 14, 2025
August full moon on August 8-9 is the Sturgeon Moon
The August full moon is the Sturgeon Moon. It takes place overnight on August 8-9, 2025. Then it will lie in front of the constellation Capricornus.
August 8, 2025
See the Venus-Jupiter conjunction on August 12
A conjunction is when 2 objects share the same right ascension. The Venus-Jupiter conjunction of August 12 is a great one for observation!
August 2, 2025
August birthstone: Peridot, spinel, or sardonyx
The August birthstone can be crystalline green peridot, colorful spinel, or banded sardonyx. Take your pick of these colorful gemstones, August babies!
August 1, 2025
What are hole-punch clouds, aka fallstreak holes?
Have you ever seen a fallstreak hole or hole-punch clouds? They're a type of cloud with a flat layer interrupted by a big hole, often with wisps at the center.
July 10, 2025
Mega comet Bernardinelli-Bernstein heading sunward, now belching jets
Astronomers have made new observations of mega comet Bernardinelli-Bernstein. They've found the comet is erupting with jets as it barrels toward the sun.
June 26, 2025
Soviet spacecraft Kosmos 482 just crashed to Earth
That old, failed Soviet spacecraft - Kosmos 482 - has apparently come back to Earth, likely in the Indian Ocean, according to Roscosmos.
May 10, 2025
