Behold, directly overhead, a certain strange star was suddenly seen...
Amazed, and as if astonished and stupefied, I stood still.

— Tycho Brahe

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Updated: 6 hours 27 min ago

Space Force's Golden Dome chief says space-based missile interceptors are possible today. 'We have proven every element of the physics'

Wed, 07/23/2025 - 1:23pm
The head of the Trump administration's Golden Dome program says the technologies needed to create such an ambitious space-based missile defense system already exist.
Categories: Astronomy

Interstellar invader Comet 3I/ATLAS is packed with water ice that could be older than Earth

Wed, 07/23/2025 - 1:00pm
Scientists have examined the interstellar invader 3I/ATLAS, finding evidence that it is packed with water that could be older than the solar system.
Categories: Astronomy

Ozzy Osbourne's journey through space, time and sci-fi: A Tribute to the 'Prince of Darkness'

Wed, 07/23/2025 - 12:29pm
A Space.com obituary for the ‘Prince of Darkness' Ozzy Osbourne.
Categories: Astronomy

How do scientists calculate the probability that an asteroid could hit Earth?

Wed, 07/23/2025 - 11:00am
The 2024 YR4 asteroid may come close to Earth, but how do experts calculate this potential impact?
Categories: Astronomy

The Milky Way brightens the moonless summer sky this week: Here's where to look

Wed, 07/23/2025 - 10:00am
Our galaxy will make for a particularly splendid sight on the dark nights surrounding the new moon phase on July 24.
Categories: Astronomy

This star escaped a supermassive black hole's violent grips — then returned for round 2

Wed, 07/23/2025 - 9:00am
A death-defying star survived destruction by a ravenous supermassive black hole in a tidal disruption event, and came back to let the cosmic titan take another bite!
Categories: Astronomy

Rare sight from space: Snow dusts the dry Atacama Desert | Space photo of the day for July 23, 2025

Wed, 07/23/2025 - 8:30am
The Atacama Desert in Chile recently received some snowfall, causing issues for the ALMA (Atacama Large Millimeter/submillimeter Array) telescope.
Categories: Astronomy

Sharp-eyed US-Indian satellite set to launch July 30 to monitor Earth's surface, warn of natural disasters

Wed, 07/23/2025 - 6:00am
NISAR, a joint mission of NASA and ISRO set to launch on July 30, will be able to see shifts in the landscape smaller than a centimeter to give warning of potential natural disasters.
Categories: Astronomy

SpaceX launches 2 powerful internet satellites, lands rocket on ship at sea (video)

Tue, 07/22/2025 - 5:24pm
A SpaceX Falcon 9 rocket launched two of SES's O3b mPOWER communications satellites toward medium-Earth orbit today (July 22), then aced its landing on a ship at sea.
Categories: Astronomy

This 200-light-year-wide structure could be feeding our galaxy's center: 'No one had any idea this cloud existed'

Tue, 07/22/2025 - 3:06pm
Astronomers have discovered a 200-light-year-wide Giant Molecular Cloud dubbed the Midpoint cloud that seems to be feeding star-building material to the heart of the Milky Way.
Categories: Astronomy

Don't miss the crescent moon cozy up to Jupiter early on July 23

Tue, 07/22/2025 - 2:00pm
The thin crescent moon and Jupiter will be visible to the naked eye for early risers on July 23.
Categories: Astronomy

'They are coming here.' AI soldiers invade Earth in thrilling new 'Tron: Ares' trailer

Tue, 07/22/2025 - 1:31pm
'A malfunctioning program who wants to live. Why is that?'
Categories: Astronomy

Stunning twilight photo captures comet bidding farewell to Earth for 80,000 years

Tue, 07/22/2025 - 1:00pm
Miguel Claro took one last look at Comet C/2023 A3 Tsuchinshan-Atlas as it bid farewell to Earth for the next 80,000 years.
Categories: Astronomy

How to safely photograph the sun: As detailed by an expert

Tue, 07/22/2025 - 1:00pm
Solar expert Dr. Ryan French explains how to safely photograph the sun and all of its wondrous features!
Categories: Astronomy

Makenzie Lystrup stepping down as director of NASA's Goddard Space Flight Center

Tue, 07/22/2025 - 12:00pm
Makenzie Lystrup will step down as head of NASA's Goddard Space Flight Center on Aug. 1. She'll be the second NASA center director to depart in just a two-month span.
Categories: Astronomy

Photograph the Perseids on August 12 with over $1000 off the Sony A7R V

Tue, 07/22/2025 - 12:00pm
The Perseid meteor shower peaks on August 12 so be ready with the Sony A7R V, on sale for $3198 from Walmart.
Categories: Astronomy

Now is your last chance to watch the Marvel movies in order with over 40% off ahead of "Fantastic Four: First Steps"

Tue, 07/22/2025 - 11:21am
You can save over 40% on a range of Disney Plus subscriptions, which is perfect for catching up on Marvel content ahead of Fantastic Four's release.
Categories: Astronomy

Nearly 300 NASA scientists sign 'Voyager Declaration' to protest Trump space science budget cuts

Tue, 07/22/2025 - 11:00am
Nearly 300 current and former NASA employees — including astronauts, engineers and scientists — have signed the "Voyager Declaration," a formal statement raising alarm over recent actions and steep budget cuts proposed by the Trump administration.
Categories: Astronomy

New 'Predator: Badlands' trailer confirms an unexpected alliance with ties to the 'Alien' universe

Tue, 07/22/2025 - 10:30am
The second Predator: Badlands trailer is full of alien beasts, gorgeous sci-fi vistas, and a Yautja hero who finds an unlikely ally in a synthetic.
Categories: Astronomy

SpaceX launches NASA's TRACERS mission to protect Earth from space weather (video)

Tue, 07/22/2025 - 10:16am
NASA's TRACERS mission blasted off July 23 on a Falcon 9 rocket with three other small agency satellites that will act as technology demonstrators to monitor space weather.
Categories: Astronomy