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Yarkovsky effect: Pushing asteroids with sunlight
The Yarkovsky effect is a minuscule push on a small body in space, imparted by nothing more than sunlight. It can change the direction of asteroids.
January 1, 2026
Blaze Star to go nova soon! Here’s how to see it
A recurring nova - long overdue - in Corona Borealis - nicknamed Blaze Star - should appear bright enough to see with the unaided eye sometime in 2026.
January 1, 2026
Learn how to shoot photos of meteors
Want to shoot photos of meteors with your camera? The first step is planning. The next step is to gather your equipment. Then on to the capture process.
January 1, 2026
How far is a light-year? Plus, distances in space
How can we comprehend the distances to the stars and other galaxies? Here's a way to understand a light-year in terms miles and kilometers.
January 1, 2026
Myths of the northern and southern lights through history
For millennia, humans have viewed the northern and southern lights and created myths and folklore to explain the dancing lights they saw in the sky.
January 1, 2026
What’s a Blood Moon? All you need to know
By this definition, Blood Moon is a member of a special kind of lunar tetrad : four total lunar eclipses in a row. Now it's used for any total lunar eclipse.
January 1, 2026
What is an astronomical unit?
An astronomical unit - or AU - is a measurement that astronomers use to describe distances in the solar system. Find out how long an AU is here.
January 1, 2026
Best stargazing of 2026: Top events not to miss
Here's the best stargazing of 2026! Read about the top celestial events not to miss in the coming year, and mark them on your calendar.
January 1, 2026
Earthshine is a lovely glow on the unlit portion of the moon
Earthshine - the dim glow on the darkened portion of a crescent moon - is light from Earth cast on the night side of the moon. Watch for it around the new moon.
January 1, 2026
Are Uranus and Neptune rock giants and not ice giants?
Are Uranus and Neptune really ice giants as scientists have long thought? A new study suggests they might be much more rocky instead of icy on the inside.
January 1, 2026
