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The Dec. 22 launch was the fourth and final flight of an H3 rocket in 2025.
The announcement was made by Robert Lightfoot, the ULA Lockheed Martin Board Chair, in a statement on Monday. The board now begins a search for his permanent replacement.
The run-through simulated day-of-launch activities, included suit up, ingress into the Orion spacecraft and a countdown that stopped just shy of T-0.
This batch of satellites will populate what the SDA calls the Tracking Layer of its Proliferated Warfighter Space Architecture (PWSA) constellation in low Earth orbit. The work will be divided evenly, with each company building…
The STP-S30 mission was moved up five months on the launch manifest for Rocket Lab. This was the 20th launch of an Electron rocket in 2025.
The vote on Dec. 17 closes out a year-long nomination process featuring the removal and renomination of the commercial astronaut.
The Falcon 9 rocket launching the Starlink 15-13 mission will fly on a south-easterly trajectory upon leaving pad 4E at Vandenberg Space Force Base. Liftoff is for 7:27 a.m. PST (10:27 a.m. EST / 1527…
The Starlink 6-99 mission represents SpaceX’s 125th launch to date from Launch Complex 39A at NASA’s Kennedy Space Center. Liftoff is scheduled for 8:42 a.m. EST (1342 UTC).
The ‘Bridging the Swarm’ mission comes two days after the company launched its ‘RAISE and Shine’ flight for JAXA. Liftoff is scheduled for 1:55 p.m. NZDT / 0055 UTC on Dec. 16 (7:45 p.m. EST…
Liftoff from Space Launch Complex 41 at Cape Canaveral Space Force Station occurred at 3:28 a.m. EST (0828 UTC), as the RD-180 engine on the booster roared to lift alongside five solid rocket boosters.
2025 was another big year for black holes, and here's our pick of the top black hole stories from the last twelve months.
According to the patent, habitable modules would rotate around a central axis to simulate gravity for crew by producing an outward-pushing centrifugal force.
In a galaxy not so far away, Lego sets can be VERY expensive: Here are the most expensive Lego Star Wars sets you can currently buy.
Outside Earth's protection, space travellers will be routinely exposed.
Early risers across North America and Europe may spot a bright, silent light gliding across the Christmas sky — and it just happens to coincide with an ISS flyby.
Fast solar wind and a possible glancing blow from a coronal mass ejection could spark auroras over Christmas.
3I/ATLAS may have moved away from Earth as it makes its way out of the solar system, but this interstellar intruder continues to delight and surprise astronomers.
An Indian LVM3 rocket successfully launched the massive BlueBird 6 smartphone satellite for AST SpaceMobile to orbit on Tuesday night (Dec. 23).
"Science doesn't always go as planned. In any case, there's a lot of work to be done."
Highlights from a cometary trio that captured our imaginations.
The "America 250" logo commemorates the upcoming 250th anniversary of the signing of the Declaration of Independence.
We just got a great up-close look at a SpaceX Starlink satellite that recently suffered an anomaly in orbit, thanks to Vantor's WorldView-3 spacecraft.
From a crescent moon and a 'Christmas Star' to deep sky delights, the wonders of the holiday night sky are yours to explore.
The South Korean startup Innospace failed during its first orbital launch attempt, which sent five satellites aloft on Dec. 22 from Brazil.
Test your cosmic eye: can you match these dazzling nebula images to their names?
Watch those skies! In 2025, quality television really did come from outer space.
Yuletide season is officially upon us and here's a joyous array of new titles to add to your holiday reading list.
NORAD celebrates its 70th year of tracking Santa Claus as he flies around the world delivering joy this Christmas Eve.
Rocket Lab launched its 21st and final mission of the year over the weekend, sending a private Japanese Earth-observing satellite to orbit.
Qingzhou is a lighter and potentially lower-cost alternative to China's Tianzhou freighter.
Auroras may be visible from Alaska to Idaho as incoming speedy solar wind continues to buffet Earth's magnetic field.
From space slugs to lunar cemeteries, these movies, games, and books show that the undead can arrive from above, as well as below.
Bitcoin-mining mega data center seen leaking heat into the environment in an image captured from orbit by a thermometer satellite
The first scientific balloon flight happened on Dec. 16, 2025.
"I think every astronomer is going to find something of value here, as NASA's missions enable the world to answer fundamental questions about how the universe got its start, and how it changed to eventually…
A bevy of comets, a "blood moon" total lunar eclipse and impressive northern lights were just three of the skywatching highlights in 2025. Here's how they unfolded.
A Japanese H3 rocket suffered an anomaly during the launch of a navigation satellite on Sunday night (Dec. 21), resulting in the loss of the spacecraft.
Enjoy some out-of-this-world fun this Christmas with my selection of the best space board games available right now.
A sampling of aging Sun-like stars demonstrates that they likely eat their closest planets.
Over the past 12 months, we saw multiple spaceflight records broken, the debut of a powerful new rocket and the first-ever fully successful private moon landing.
Ursid shooting stars may be visible throughout the night on Dec. 21-22.
As the veteran 'Who' antagonists get ready for their close-up, we look back at 50 years of underwater history.
Today marks the shortest day and longest night of the year as the sun reaches its lowest point in the Northern Hemisphere sky.
Black Friday offers massive discounts on a host of products, but you don't have to wait until the next one to save big. From Boxing Day to Prime Day 2026, we investigate which is the…
You don't have to search the upside down to find the best Stranger Things gifts outside of Hawkins, so celebrate season five's release with these top gifts.
As Avatar: Fire and Ash makes its cinematic debut, here's James Cameron's best directorial sci-fi movies to date – and the list is earth-shatteringly impressive.
On Episode 190 of This Week In Space, Rod Pyle and Tariq Malik look back at the past year in space — its ups, its downs, its all-arounds.
Hated rivals Dennis Quaid and Lou Gossett Jr. find brotherhood on a desolate planet in Wolfgang Petersen's cult sci-fi classic.
Does the universe notice that we're paying attention to a quantum experiment? The answer goes against everything we thought we knew.
Show the space enthusiast in your life that you love them to the moon and back with the best last-minute holiday gifts available.
Are you behind on your holiday shopping or holding out for some final pre-Christmas bargains? From telescopes to monoculars, we've rounded up the best last-minute savings on optical equipment.
"The sheer amount of radiated energy from these bursts is so large that you can't power them with a core collapse stellar explosion — or any other type of normal stellar explosion."
The 3,600-piece Lego Icons Star Trek USS Enterprise is Lego's first-ever Star Trek set, and you get a free gift when you purchase it before Christmas eve.
"We do not know with certainty that we found a superkilonova, but the event nevertheless is eye-opening."
Odin Space and Arkisys are teaming up to provide customers with pioneering insurance for spacecraft specifically to cover space debris collision events.
Ubisoft's ambitious open-world game remains the best way to immerse yourself in Pandora's lush locales, exotic creatures, and fierce battles.
Whether you're buying for yourself or hunting for a gift for a keen astrophotographer, there's still time to save hundreds with these last-minute deals on cameras and lenses.
A photographer in Italy captured an ultra-rare elve and red sprite flashing above the Alps in a single breathtaking moment.
"Virgil has two personalities, its 'good' side – a typical young galaxy quietly forming stars. But Virgil transforms into the host of a heavily obscured supermassive black hole, pouring out immense quantities of energy."
"There is a lot to keep us busy."