SpaceX will launch a secret payload for the U.S. National Reconnaissance Office today (Dec. 9), and you can watch the action live.
Leading X-ray space telescopes XMM-Newton and XRISM have spotted an extraordinary blast from a supermassive black hole. In a matter of hours, the gravitational monster whipped up powerful winds, flinging material out into space at eye-watering speeds of 60 000 km per second.
NASA astronaut Jonny Kim and Roscosmos cosmonauts Sergey Ryzhikov and Alexey Zubritsky landed on Russia's Soyuz MS-27 on Dec. 9, 2025, after 245 days on the International Space Station.
White dwarfs are called stellar remnants because they're what's left of main sequence stars after they've shed most of their mass and ceased fusion. But despite being mere remnants for whom fusion is only a distant memory, they can still be the locations of enormously powerful thermonuclear explosions called novae.
By its very nature, spaceflight is very challenging and very wasteful. As Tsiolkovsky's famous Rocket Equation establishes, propellant accounts for the majority of a rocket's mass, which is burned off during launch. The process also introduces large amounts of greenhouse gases, such as carbon dioxide, water vapor, and black carbon, as well as ozone-depleting chemicals, into the upper atmosphere. On top of that, the disposal process for satellites once they are no longer operational (deorbiting and burning up in the atmosphere) is also wasteful, with no materials retrieved or reused.
Check out the first findings from the Subaru Telescope.
A SpaceX Falcon 9 rocket carrying 29 Starlink satellites lifted off from NASA's Kennedy Space Center in Florida on Monday, Dec. 8, 2025. It was the record 32nd flight of the Falcon's first stage.
New simulations suggest TRAPPIST-1e's possible methane atmosphere may be a false signal from its star, raising fresh questions about the planet’s habitability.
It’s December and that means one of the best celestial events will grace the skies. The Geminid meteor shower should peak between Saturday night and Sunday morning, December 13–14.
Intermediate mass black holes (IMBH), if they exist, have between about 100 and 1000 solar masses, placing them in between stellar black holes and supermassive black holes. But while there's plenty of evidence for both stellar mass black holes and supermassive black holes, the evidence for IMBHs isn't as convincing. There are many candidates, but there's no wide agreement on any of them. Yet our theories of black holes show there should be something in between stellar black holes and supermassive black holes, and IMBHs could be the missing link.
Ahead of Terminator 2D: NO FATE, we're going back in time to find some Terminator games that don't suck. Don't worry, we'll be back!
"It’s kind of a jigsaw puzzle where all the different pieces are moving."
The center of the Milky Way is an extreme environment dominated by the supermassive black hole (SMBH) Sagittarius A star (Sgr A-star). Sgr A-star has about 4 million solar masses, and its powerful gravity and radiation defines the region. Its gravity accelerates the orbits of stars and gas clouds in its vicinity. Radiation from the SMBH's accretion processes, from the stellar winds coming from colliding stars, from abundant supernovae explosions, and from superheated gas falling toward the black hole, saturates the region.
Frequent flares from the nearby star TRAPPIST-1 could offer new clues in the search for habitable planets beyond Earth.
The U.S. Senate will hold its second hearing to consider billionaire tech entrepreneur Jared Isaacman's nomination for NASA chief on Wednesday (Dec. 3), and you can watch the action live.
The supermoon shines brighter and bolder than usual—discover which dazzling lunar personality matches you.
Auroras may be visible from Alaska to Illinois as an incoming coronal mass ejection is expected to slam into Earth.
…Except for Mab, which is even weirder than expected.
Private billionaire SpaceX astronaut Jared Isaacman appeared before a Senate committee Dec. 3 for consideration as NASA administrator. Here are 5 big takeaways from the hearing.
This rare phenomenon is also called the green rim and it actually happens at every sunset.
An AI start-up has found a vulnerability in security software protecting NASA's ground control communications with satellites in space.
All Rights Reserved. 2025. SpaceZE.com
