With two days to go until the astronomical start of fall, 7 p.m. sunsets are over in Denver for the rest of the year.

The brightest, best date for spotting Saturn is fast approaching. Here's how to see the ringed planet from Indiana.

Here's what happens as the direct rays of the sun slip south of the equator as the seasons change.

On Sept. 23, a spacecraft will launch with a clear mission — to keep a constant watch on the sun to help protect Earth from space weather. The satellite, Space Weather Follow-On L1 (SWFO-L1), is ...

The fall equinox is a significant event in any tipped planet's life. Seasons are caused by a planet's tilted axis. Those which orbit the sun standing nearly straight up and down with little to no ...

Astronomers are using radio pulses from space to find missing baryonic matter and learn about supermassive black holes, ...