Whenever someone talks about black holes, they almost always talk about the event horizon and the singularity. After all, that's what defines a black hole, right? Well, it depends on what you mean by black hole. There are some that would argue a black hole doesn't need a singularity, and that could mean they don't even have an event horizon.
Space News & Blog Articles
Rise of the Axion
So where do we go after years of empty searches for dark matter? We haven’t learned nothing. After decades of searches, we’re narrowing down the range of what dark matter can and cannot be.
SpaceX launches 100th Starlink flight of 2025
A SpaceX Falcon 9 rocket soars away from Vandenberg Space Force Base in California at the beginning of the Starlink 11-23 mission on Oct. 31, 2025. Image: SpaceX
Update Oct. 31, 6:30 p.m. EDT (2230 UTC): SpaceX deployed the 28 Starlink satellites.
Halloween stargazing 2025: The moon and Saturn light the night sky for trick-or-treaters
A waxing gibbous moon and the ringed planet Saturn will enlighten our sky for treat-or-treaters this Halloween.
Seas of the Sun: The story of Cluster
Video: 00:46:03
What began with tragedy ended in triumph. This is the untold story of the European Space Agency’s pioneering 25-year Cluster mission to study how invisible solar storms impact Earth's environment.
Earth from Space: Ghostly lake
Image: To celebrate Halloween, we bring you these spooky sights of Lake Carnegie in Australia, captured from space by Copernicus Sentinel-2.
Flickering flame: spooky spirits or serious science?
Image: Flickering flame: spooky spirits or serious science?
This Week's Sky at a Glance, October 30 –November 9
Saturn is in excellent view all evening. In a telescope its rings look like a thin needle piercing the big yellow globe. Soon the rings will turn exactly edge-on.
A Mundane Universe and the Rarity of Advanced Civilizations
How could the principle of “radical mundanity” proposed by the Fermi paradox help explain why humans haven’t found evidence of extraterrestrial technological civilizations (ETCs)? This is what a recently submitted study hopes to address as a lone researcher investigated the prospect for finding ETCs based on this principle. This study has the potential to help scientists and the public better understand why we haven’t identified intelligent life beyond Earth and how we might narrow the search for it.
Blue Origin completes New Glenn static fire test, preparing for NASA’s EscaPADE mission launch
Blue Origin conducted a roughly 40-second-long static fire of its New Glenn rocket on Oct. 30, 2025. This hotfire of the seven BE-4 engines is a precursor to the launch of NASA’s EscaPADE mission. Image: Adam Bernstein / Spaceflight Now
Blue Origin lit up a pocket of Florida’s Space Coast Thursday night when it hot fired its New Glenn rocket for an engine test lasting roughly 40 seconds in duration.
The Keen-Eyed Vera Rubin Observatory Has Discovered A Massive Stellar Stream
The Vera Rubin Observatory (VRO) hasn't yet begun it's much-anticipated Legacy Survey of Space and Time. But it saw its first light in June 2025, when it captured its Virgo First Look images as part of commisioning its main camera. Those images are a sample of how the observatory will perform the LSST and feature the Virgo Cluster of galaxies.
Kepler Belt: A Journey Through the Solar System's Icy Frontier
The Kepler Belt, also known as the Edgeworth-Kepler Belt, is a circum-stellar disc in the outer Solar System, extending from the orbit of Neptune at 30 AU (astronomical units) to approximately 50 AU from the Sun. It is similar to the asteroid belt, but it is far larger—20 times as wide and 20 to 200 times as massive. Like the asteroid belt, it consists mainly of small bodies, or remnants from the Solar System's formation.
This Radio Colour Image Is A New Way To Explore The Milky Way
Nature's like a photographer's canvas backdrop, lit up by the different types of electromagnetic radiation. Gamma radiation is the most powerful, strong enough to rip your double helix in two. Radio waves are at the low end. They're generally safe, and are almost omnipresent; we live in a sea of radio waves.
Maya 260-day Calendar Provides Key to Solar Eclipse Predictions
A new study has found that the 260-day ritual calendar is the key to understanding how the Maya predicted solar eclipses.
The Empty Search for Dark Matter
What if I told you that while you can’t see dark matter, maybe you can hear it? I know, I know, it sounds crazy…and it is crazy. But it’s crazy enough that it just might work. It’s a real life experiment, called the…let me see here…the Cryogenic Rare Event Search with Superconducting Thermometers, or CRESST – that’s a double s in case you didn’t catch that. Look it’s not the greatest of acronyms but we’re going to just go with it.
James Webb Space Telescope spots the haunting Red Spider Nebula with 3-light-year-long legs
A new James Webb Space Telescope image showcases the gorgeous Red Spider Nebula against a backdrop of twinkling stars.
Former NASA Administrators urge space agency to rethink plans for Artemis Moon lander
Mike French (left) hosted a fireside chat with former NASA administrators Jim Bridenstine (center) and Charles Bolden (right) at the 2025 von Braun Space Exploration Symposium in Huntsville, Alabama. Image: American Astronautical Society via livestream
Two former NASA Administrators called on the space agency to rethink its plans to land astronauts on the Moon using SpaceX’s Starship, saying development of the revolutionary vehicle was taking too long and required unnecessary complexity.
Sentinel-1D pre-launch media briefing
Video: 00:45:45
Follow the online briefing on the launch scheduled for 4 November 2025. The Copernicus Sentinel-1 mission delivers radar images of Earth’s surface. It is vital for disaster response teams, environmental agencies, maritime authorities, climate scientists.
We're Putting Lots Of Transition Metals Into The Stratosphere. That's Not Good.
We successfully plugged the hole in the ozone layer that was discovered in the 1980s by banning ozone depleting substances such as chlorofluorocarbons (CFCs). But, it seems we might be unintentionally creating another potential atmospheric calamity by using the upper atmosphere to destroy huge constellations of satellites after a very short (i.e. 5 year) lifetime. According to a new paper by Leonard Schulz of the Technical University of Braunschweig and his co-authors, material from satellites that burn up in the atmosphere, especially transition metals, could have unforeseen consequences on atmospheric chemistry - and we’re now the biggest contributor of some of those elements.
Surveying Atmospheric Escape from Gas Giants Orbiting F-Type Stars
Why is it important to know about exoplanets having their atmospheres stripped while orbiting F-type stars? This is what a recent study submitted to *The Astronomical Journal* hopes to address as an international team of scientists conducted a first-time investigation into atmospheric escape on planets orbiting F-type stars, the latter of which are larger and hotter than our Sun. Atmospheric escape occurs on planets orbiting extremely close to their stars, resulting in the extreme temperature and radiation from the host star slowly stripping away the planet’s atmosphere.

