The Moon could be the proving ground for humanity’s evolution, however, this new frontier raises complex legal questions.

“Whether it is real or not, it is 100 percent NOT Planet Nine,” Brown says. “Planet Nine is a prediction based on inferred ...

It really depends on the higher levels of our atmosphere, but a lower dew point is a better starting point for good observing ...

An aerospace engineer explains why NASA, Space Force and other agencies are using or testing aerobraking for more ...

Debris from the 50 year-old probe Cosmos 482 crash-landed into the Indian Ocean over the weekend.

The solar system's smallest planet is quickly approaching superior conjunction, so catch it in the morning sky while you can.

The Ursa Minor Dwarf is a small galaxy, a loose aggregation of stars, and a satellite of the Milky Way. Its gravitational ...