Watch the Sept. 21 partial solar eclipse live online with this handy livestream. Coverage begins at 2 p.m. EDT (1800 GMT).

Plus, catch Saturn and Neptune at their brightest; spy the "string of pearls" galaxy; and a close encounter of the moon and ...

“What is the difference between a mountain and a pebble when it’s whizzing by at 210,000 kilometers per hour?” For astronomers that have been monitoring the interstellar comet 3I/ATLAS, the reply is ...

India witnesses a rare total lunar eclipse (Chandra Grahan) tonight. The Blood Moon peaks at 11:01 pm and lasts 82 minutes.