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Alternating yellow hexagons and hexagons featuring images of space and black holes
'A real revolution': The James Webb telescope is upending our understanding of the biggest, oldest black holes in the universe For years, the James Webb Space Telescope has been spotting enormous black holes in the early universe that defy all expectations. Now, astronomers are finally deciphering the origins of these cosmic behemoths.
Image of a planet in space. The planet has red land masses surrounded by large areas of blue water dotted with white clouds.
An ocean the size of the Arctic once covered half of Mars, new images hint Mars may have been a "blue planet" with an ocean the size of today's Arctic Ocean, a new study suggests.
Image of a horizontal oval with many orange and blue dots scattered throughout.
Dark matter and neutrinos may interact, hinting at 'fundamental breakthrough' in particle physics Astronomers found evidence that dark matter and neutrinos may interact, hinting at a "fundamental breakthrough" that challenges our understanding of how the universe evolved.
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man stood in a snowy field under the night sky

The 9 best things to see in the night sky with binoculars from November 2025 to January to 2026

By Jamie Carter published

Discover the highlights of the Northern Hemisphere’s winter night sky with our guide to the top celestial sights to enjoy through binoculars between November 2025 and January 2026.

Space

NASA spacecraft takes milestone 100,000th image of Mars (photo)

By Brandon Specktor published

NASA's Mars Reconnaissance Orbiter spacecraft has just taken its milestone 100,000th photo of the Red Planet using its high-definition camera. It reveals a dark region of moving sand dunes.

Mars

Best space photos of 2025

By Harry Baker published

An alien comet, a Martian volcano, a man’s fall from the sun and a groundbreaking telescope’s first images: Here are the most jaw-dropping space photos of 2025.

Space
A Pair of Galactic Cornucopia (Webb + Chandra)

Glittering new James Webb telescope image shows an 'intricate web of chaos' — Space photo of the week

By Jamie Carter published

This mash-up of data from the James Webb Space Telescope and the Chandra X-ray Observatory reveals two galaxies mid-collision, with their spiral arms overlapping and bending toward their neighbors' cores.

Space
Venus and crescent moon next to each other.

Why is Venus so bright?

By Deepa Jain published

The "morning star" is bright because of several factors, including having an atmosphere filled with sulfuric acid.

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Venus

'Unprecedented' protoplanet collision spotted in 'Eye of Sauron' star system just 25 light-years from Earth

By Ivan Farkas published

Scientists watching the nearby Fomalhaut star system have directly seen two protoplanets smash together for the first time. Then, they saw it happen again.

Astronomy

That was the week in science: Farewell comet 3I/ATLAS | Starlink tumbles from orbit | AI’s giant carbon footprint

By Patrick Pester, Ben Turner last updated

LIVE Friday, Dec. 19, 2025: Your daily feed of the biggest discoveries and breakthroughs making headlines.

LIVE
illustration of spacecraft nearing a green comet

Interstellar comet 3I/ATLAS is rapidly moving away from us. Can we 'intercept' it before it leaves us forever?

By Harry Baker published

3I/ATLAS has passed its closest point to Earth, meaning we will soon lose sight of it for good. Some scientists want to send a spacecraft to chase down the alien comet — or the next interstellar object.

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Space Exploration

Interstellar comet 3I/ATLAS makes closest pass of Earth. Where's it heading next?

By Patrick Pester published

Everyone's favorite interstellar comet, 3I/ATLAS, flew past Earth overnight, coming within about 168 million miles (270 million kilometers) of our planet.

Comets

Comet 3I/ATLAS reaches its closest point to Earth tonight: How to see it

By Jamie Carter last updated

Comet 3I/ATLAS, the third interstellar object ever detected, reached its closest point to Earth overnight from Thursday to Friday (Dec. 18 to 19), and it remains in a good viewing position tonight. Here's how to see it.

Comets
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