A daily update by email. Science news, great photos, sky alerts.
Watch for the super-close pairing of the sky's 2 brightest planets, Venus and Jupiter. They'll be in the sunrise direction, low in the east at dawn.
Tom Wildoner captured this view on May 12 in Maine's Acadia National Park. See bright Mars on the right.
Hurricane Joaquin will batter the central Bahamas with hurricane force winds, storm surge and heavy rain through tonight.
Aurora, mirrored in water, west of Saskatoon in Canada. Photo by Colin Chatfield.
The moon is past full now, but it'll look full by Saturday night in North America. The moon will be closest to Earth Sunday morning at 3:37 a.m. (8:27 UTC).
Sun news for September 6: Big blast on the sun's far side! Meanwhile, AR3807 keeps activity at moderate. Join our livestream at 12:15 CDT (17:15 UTC) today!
Visible planets and night sky guide for September 2024. Look for Mars near planet Jupiter and the stars Castor, Pollux and Betelgeuse.
A small asteroid harmlessly hit Earth's atmosphere above the northern Philippines around 16:39 UTC on September 5, 2024. Watch the videos of the event here!
Don't miss Saturn at opposition on and around the night of September 8, 2024. That's when our planet Earth passes between the sun and Saturn.
A new study shows there is likely much more water on exoplanets than previously thought. Most of it would be hidden in a planet's interior.
Mercury reaches its greatest elongation - greatest distance from the sunrise - on September 5, 2024. Look east at dawn. It'll brighten for the next few weeks.
Get a list of the SpaceX Starlink launches for September 2024 from both the West and East Coasts. Find out how to watch the livestream, and get updates, too.
The Draconids will be best before dawn around the nights of October 7-8. Your 2024 meteor shower guide here. Under dark skies you might catch about 10 per hour.
Get a list of all the SpaceX Starlink launches for August 2024 from both the West and East Coasts. Find out how to watch the livestream, and get updates, too.
Combined data from ESA and NASA has demonstrated how fluctuations in the sun's magnetic field accelerate and heat the solar wind.
The zodiacal light is an eerie light extending up from the horizon before dawn around the Northern Hemisphere autumn. Southern Hemisphere? Look after sunset!
Amateur astronomer Filipp Romanov has discovered four asteroids and they are now named for his great-grandfathers and great-grandmothers.
Venus after sunset will next reach greatest elongation on January 9-10, 2025. Look for a blazingly bright object in the sunset direction in evening twilight.
A new SETI search for extraterrestrial intelligence, by astronomers in Australia, is the 1st of its kind. It looked for technosignatures in distant galaxies.
Humpback whales create and manipulate bubble nets as tools. Alone and in groups, the whales use the nets to encircle prey and maximize their catch.