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Posts by
Editors of EarthSky
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 16, 2024
See it! This week’s auroras and Perseids!
The beloved Perseid meteor shower peaked just as auroras were gracing our skies. Wow! See images from the EarthSky community here.
August 13, 2024
A conjunction happens when 2 worlds meet on the sky dome
A conjunction is when two objects share the same right ascension and are close together in our sky. Some conjunctions can't be seen, but others are spectacular.
August 9, 2024
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 2, 2024
Airplane glory: What is it and how to spot one?
An airplane glory is easy to see, if you watch for it. It's the plane's shadow cast on a cloud, or the ground, surrounded by a halo of light.
July 30, 2024
Radiant point of meteor showers: All you need to know
Meteors enter Earth's atmosphere on parallel paths. So, you'll see meteors appear to come from a single point in the sky: the radiant point!
July 26, 2024
Can sharks smile? It’s Shark Week on the Discovery Channel
Dogs, monkeys and dolphins all show expressions akin to human smiles. But can sharks smile? They may look as if they're smiling, but are they, really?
July 7, 2024
Earth
Noctilucent clouds: Best season in years, happening now!
It may be the best noctilucent cloud season in years! Europe has had stunning displays of these night-shining clouds. See a gallery of noctilucent clouds.
June 30, 2024
Asteroid Day to be observed worldwide on June 30
Asteroid Day is celebrated each year on June 30. Events are celebrated in Luxembourg (June 28-29) and around the world. Find more info here.
June 28, 2024
Draco the Dragon and Thuban, a former pole star
Let your eyes and imagination drift to see the winding shape of Draco the Dragon. And meet Thuban, a former pole star, between the Big and Little Dippers.
June 26, 2024
