Who are we? We find that we live on an insignificant planet of a humdrum star lost in a galaxy tucked away in some forgotten corner of a universe in which there are far more galaxies than people

— Carl Sagan

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Updated: 5 hours 35 min ago

Astronomers discover the largest comet from the outskirts of the solar system is exploding with jets of gas

Thu, 06/19/2025 - 9:00am
The monsterous 85-mile-wide comet C/2014 UN271 isn't just the largest icy rock in the Oort Cloud, it's the second most distant that is chemically active.
Categories: Astronomy

Northern lights may be visible in these 9 US States tonight

Thu, 06/19/2025 - 8:48am
Auroras may be visible from Alaska to New Hampshire as geomagnetic activity remains unsettled.
Categories: Astronomy

'The models were right!' Astronomers locate universe's 'missing' matter in the largest cosmic structures

Thu, 06/19/2025 - 6:00am
Using the XMM-Newton telescope, astronomers have discovered a vast 23 million light-year-wide tendril connecting galactic clusters and containing much of the universe's missing matter.
Categories: Astronomy

SpaceX's Starship explodes in Texas during preparations for 10th test flight

Thu, 06/19/2025 - 3:08am
SpaceX's newest Starship vehicle exploded on a stand in Texas late Wednesday night (June 18), as it was being prepped for the program's 10th-ever test flight.
Categories: Astronomy

See the moon rise alongside the giant planets Neptune and Saturn predawn on June 19

Wed, 06/18/2025 - 5:00pm
The alignment occurs hours after the moon hits its third quarter phase.
Categories: Astronomy

2 Chinese spacecraft just met up 22,000 miles above Earth. What were they doing?

Wed, 06/18/2025 - 4:00pm
A new Chinese refueling spacecraft met up with an older satellite in high Earth orbit this month, apparently marking a step forward in orbital servicing.
Categories: Astronomy

Mars joins the Spring Triangle this week: Here’s when and how to see it

Wed, 06/18/2025 - 3:00pm
Mars will remain in the Spring Triangle until mid-September.
Categories: Astronomy

Watch Honda launch (and land) its 1st reusable rocket in this wild video

Wed, 06/18/2025 - 2:00pm
The Japanese automaker Honda just hit a key milestone in rocket reusability with a near-bullseye landing during a vertical test flight in Hokkaido.
Categories: Astronomy

'The Best of Both Worlds' at 35: Why we're still assimilated by 'Star Trek''s greatest ever cliffhanger

Wed, 06/18/2025 - 1:00pm
Resistance is futile! We look back on the classic 'Trek' episode, back when the Borg were still the scariest bad guys in the galaxy.
Categories: Astronomy

NASA satellite sees sea ice crack apart in Canada | Space photo of the day for June 18, 2025

Wed, 06/18/2025 - 12:00pm
NASA's Terra satellite captured huge chunks of sea ice breaking apart in Canada's Amundsen Gulf.
Categories: Astronomy

This Australian moth may be the 1st insect ever discovered to use stars for long-distance navigation

Wed, 06/18/2025 - 11:01am
"We know that daytime migratory insects use the sun, so testing the starry sky seemed an obvious thing to try."
Categories: Astronomy

'Nerds are cool' — Pixar's 'Elio' is a powerful story of finding yourself amongst the stars (interview)

Wed, 06/18/2025 - 10:00am
We spoke to "Elio" stars Zoe Saldaña, Yonas Kibreab, and Brad Garrett, alongside co-directors Domee Shi and Madeline Sharafian, about finding the heart and humanity in sci-fi stories.
Categories: Astronomy

Watch your favorite sci-fi shows anywhere in the world and get a free Amazon voucher ahead of Prime Day with this NordVPN deal

Wed, 06/18/2025 - 9:22am
Get up to 76% off NordVPN and claim a free $50 Amazon Voucher ahead of Prime Day — watch season three of Star Trek: Strange New Worlds from anywhere.
Categories: Astronomy

Firefly Aerospace to launch 'Ocula' moon-imaging service as early as 2026

Wed, 06/18/2025 - 9:00am
Firefly Aerospace plans to launch a new "lunar imaging service" called Ocula, which will collect detailed imagery using a set of moon-orbiting spacecraft.
Categories: Astronomy

Colossal solar flare erupts from Earth-facing sunspot, sparking strong radio blackouts over Pacific Ocean (video)

Wed, 06/18/2025 - 8:16am
The prolific flare factory doesn't look like stopping anytime soon.
Categories: Astronomy

Astronomers capture the most intricate picture of a galaxy in a thousand colors ever seen (photo, video)

Wed, 06/18/2025 - 8:00am
A stunning new image of the Sculptor Galaxy, located 11 million light-years away, painted in thousands of colors by the VLT, reveals the intricacies of galactic systems.
Categories: Astronomy

Satellite streaks: Can the huge new Vera Rubin Observatory function in the megaconstellation age?

Wed, 06/18/2025 - 6:00am
Satellite streaks are a blight on astronomy. How much are observations by the Vera Rubin super telescope going to suffer from this contamination?
Categories: Astronomy

SpaceX sends 28 Starlink satellites into low Earth orbit on launch from Florida (video)

Wed, 06/18/2025 - 2:08am
A SpaceX Falcon 9 rocket launched 28 Starlink internet satellites into low Earth orbit from Cape Canaveral Space Force Station in Florida on Wednesday, June 18, 2025.
Categories: Astronomy

Tiny ‘primordial’ black holes created in the Big Bang may have rapidly grown to supermassive sizes

Tue, 06/17/2025 - 5:00pm
Supermassive black holes that seem too large to exist in the early universe may have grown from primordial black holes formed in the first second after the Big Bang.
Categories: Astronomy

Northern lights and glowing noctilucent clouds collide in a rare night sky show over Alberta (photo)

Tue, 06/17/2025 - 4:00pm
The surprise display was captured on June 9 by aurora chaser Harlan Thomas.
Categories: Astronomy