Earth | Page 3 of 14 | Astronomy.com

We still can’t protect Earth from potentially hazardous asteroids

Alien Life, Solar System

What is a UFO? Interest continues to increase over unidentified craft

Watch: Meteorite strikes Earth when and where scientists predicted it would

Strange twist: Earth’s inner core may be changing its spin direction

Do we know more about the Moon than the deep sea? No.

How has Earth’s core stayed as hot as the Sun’s surface for billions of years?

The sky isn’t just blue — airglow makes it green, yellow, and red too

Best images of Earth as seen from space in 2022

How Earth’s tilt creates short, cold January days

Fiber optics help scientists take the pulse of our planet

Where did Earth’s oxygen come from? New study hints at an unexpected source

Human Spaceflight, Solar System

What Earthly objects can be seen from space?