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

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

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

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

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