Earth's climate has swung between ice ages and warmer periods for millions of years, driven by subtle changes in our planet's ...

Earth's orbit is an ellipse, not a perfect circle. Earth's distance from the Sun varies by about 3 million miles throughout the year. Earth's orbit's semimajor axis is approximately 93 million miles.

Earth has a single natural satellite—our Moon. But tens of thousands of artificial satellites have been sent into orbit. And most of them remain, revolving around Earth at various altitudes. Nearly ...

Slow orbital changes caused pulses in Earth's oxygen cycle 500 million years ago, which spurred explosions of animal life.

More objects are being launched into space than ever, and most are headed for low Earth orbit. This region of space has become increasingly crowded with launches from SpaceX and others that have ...

The secret behind how the International Space Station remains in orbit can be traced all the way back to the genius of Sir Isaac Newton. When you purchase through links on our site, we may earn an ...

There is more space junk in Earth's orbit now than ever before. And this growing problem is creating an increasingly hazardous environment for operational spacecraft and satellites. Space junk ...

Fleets of satellites interfere with snapshots taken by Earth-bound observatories. But a new study suggests these orbiters ...

"Everything we have ever designed to go into space has been one mission, one life. It's sort of crazy." The world at large is working to stop the fast-progressing degradation of Earth's environment.