Alien tech on the moon? Scientists propose search for microscopic debris

Could there be alien tech on the moon? Scientists propose a new search for microscopic particles shed by alien technology.

See Venus in the daytime: Here are 3 helpful tips

You can spot Venus in the daytime. One of the best ways is when its near the moon. Here are 3 tips to help you spot the brilliant planet Venus in daylight.

Crepuscular rays are sunrays in twilight skies

Crepuscular rays form around twilight when particles in the atmosphere reflect the sun's light beams toward our eyes. See photos of the phenomenon here.

Does this Mars image show an alien in a hallway?

What do you see in the Mars image? Some people think the rocks look like a hallway where a little alien is walking. Other instances of pareidolia, here.

Atlantic hurricane season sets a record: No hurricanes yet!

The 2026 Atlantic hurricane season has set a record. It's the longest we've ever gone in a hurricane season without seeing a hurricane. Read more here.

Did the sun swallow a planet early in its history?

Did the sun swallow a planet early in its history? Models show a super-Earth might have spiraled into the sun and left a fingerprint we can still see today.

Distant proto-supercluster! An early intersection point in the cosmic web?

Astronomers have found the most distant proto-supercluster yet, an early collection of galaxies at a junction in the cosmic web.

International Cloud Appreciation Day is September 11

The international Cloud Appreciation Day is September 11, 2026. Learn how to participate here and see a gallery of beautiful clouds.

Anak Krakatau erupts in Indonesia, 8 people missing

Anak Krakatau erupted in early September, sending gas and ash into the atmosphere. 8 people, including 5 journalists, are now missing.

What is retrograde motion? And why is the moon moving backwards?

What is retrograde motion? See an image that appears to show the moon moving backwards! An explanation, and more bizarre examples, here.