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Space
Farewell, Gaia! Now check out this animation
ESA's Gaia spacecraft has now ended its operations, after measuring some 2 billion Milky Way objects. A new animation shows some of its greatest new insights.
January 21, 2025
Today's Image
Leo P and a host of other galaxies
Researchers used the Webb Space Telescope to reveal patterns of star formation in a dwarf galaxy, Leo P. The image captured many other galaxies too.
January 21, 2025
Space
Andromeda galaxy: Hubble’s largest photomosaic yet
Astronomers have created the largest photomosaic of the Andromeda galaxy yet using Hubble data. The image helps trace the hidden history of Andromeda.
January 21, 2025
Astronomy Essentials
Tonight
Visible planets and night sky guide for January
Visible planets and night sky guide for January 2025. Tonight, look for the last quarter moon. It’ll rise after midnight your local time and set around noon.
January 21, 2025
Earth
Sun
Sun news: Beautiful flare and filament explosion
Sun news for January 21, 2025. An M3.4 flare and erupting filament from AR3967 have kicked sun activity up to moderate levels. A CME might be on its way.
January 21, 2025
Tonight
Is super-bright Comet ATLAS G3 disintegrating?
Comet ATLAS G3 might be the brightest comet of 2025. It's wowed Southern Hemisphere viewers. But new reports say it might be starting to disintegrate.
January 20, 2025
Human World
Is social media polarization about to get worse?
Social media behemoth Meta is planning to use crowdsourced 'community notes' for factchecking. Some experts worry this will only increase online polarization.
January 19, 2025
Space
Wow! Binary star’s dusty rings shine in new Webb images
NASA's Webb Space Telescope has taken stunning new images of a binary star's dusty rings. The rings of Wolf-Rayet 140 are expanding at 1% the speed of light.
January 19, 2025
Human World
Space
Do aliens exist? What scientists really think
Aliens probably exist according to a survey of more than 1,000 scientists. Nearly 87% of them believe in extraterrestrial life.
January 19, 2025
Tonight
Orion the Hunter is easy to spot in January
Orion the Hunter is one of the easiest constellations to identify thanks to Orion's Belt, the 3 medium-bright stars in a short, straight row at his waist.
January 19, 2025
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