There are many worlds and many systems of Universes existing all at the same time, all of them perishable.

— Anaximander 546 BC

Astronomy

A Lunar Base Could Start with a Dome over a Crater Made of Regolith

Universe Today - Thu, 07/17/2025 - 2:02pm

When astronauts live on the Moon permanently, they're going to need a safe habitat, ideally made out of local construction material. A new paper suggests that lunar astronauts could cover a 17-meter crater with a dome made from a lunar regolith-based geopolymer. A 3D printer would extrude a paste made of lunar regolith that would be sintered together into the shape of the dome. This would provide protection from radiation and could even maintain a pressurized habitat.

Categories: Astronomy

This Earth-sized Exoplanet is On a Death Spiral

Universe Today - Thu, 07/17/2025 - 2:02pm

An international team of astronomers have discovered an Earth-size exoplanet on a very tight orbit around its star. It completes an orbit in only 5 hours and 22 minutes. Unfortunately, the planet will either be torn to pieces or crash into its star in about 31 million years.

Categories: Astronomy

2 billion-year-old moon rock found in Africa reveals secret lunar history

Space.com - Thu, 07/17/2025 - 2:00pm
The basaltic meteorite is a piece of lunar rock that formed in a lava flow 2.35 billion years ago, long after volcanism on the moon was supposed to have ended.
Categories: Astronomy

Space Station Crew Celebrates Milestone

NASA Image of the Day - Thu, 07/17/2025 - 1:35pm
NASA astronaut and Expedition 73 Flight Engineer Anne McClain shows off a hamburger-shaped cake to celebrate 200 cumulative days in space for JAXA (Japan Aerospace Exploration Agency) astronaut Takuya Onishi (out of frame) since his first spaceflight as an Expedition 48-49 Flight Engineer in 2016.
Categories: Astronomy, NASA

A vast shadow will sweep over Saturn's cloud tops early on July 18: Here's how to see it

Space.com - Thu, 07/17/2025 - 1:00pm
Titan shadow transit seasons occurs just once every 15 years.
Categories: Astronomy

UK online safety law is going to change the way we use the internet

New Scientist Space - Cosmology - Thu, 07/17/2025 - 12:23pm
The UK's Online Safety Act is intended to stop children from accessing pornography online, but its potential implications are much wider reaching
Categories: Astronomy

UK online safety law is going to change the way we use the internet

New Scientist Space - Space Headlines - Thu, 07/17/2025 - 12:23pm
The UK's Online Safety Act is intended to stop children from accessing pornography online, but its potential implications are much wider reaching
Categories: Astronomy

Best tabletop telescopes for stargazing in 2025

Space.com - Thu, 07/17/2025 - 12:00pm
All of the telescopes here are easy to set up on a tabletop, making them an easy option for beginners and professional stargazers.
Categories: Astronomy

China's Tianwen 2 asteroid-sampling probe snaps gorgeous shots of Earth and the moon (video, photos)

Space.com - Thu, 07/17/2025 - 12:00pm
China's Tianwen 2 mission captured stunning views of Earth and the moon from deep space just days after launch.
Categories: Astronomy

'Star Trek: Strange New Worlds': Rebecca Romijn and Christina Chong on Una and La'an living their best lives in Season 3 (exclusive)

Space.com - Thu, 07/17/2025 - 12:00pm
'It's fun to see Una come down on someone. We don't get to see that very often.'
Categories: Astronomy

Bad news for alien life? Earth-size planets may be less common than we thought

Space.com - Thu, 07/17/2025 - 11:00am
Up to 200 worlds investigated by NASA's exoplanet-hunting TESS satellite could be bigger than predicted, a finding that could impact our search for alien life.
Categories: Astronomy

Telescope spies rare interstellar comet 3I/ATLAS zooming through our solar system (photos)

Space.com - Thu, 07/17/2025 - 10:00am
Astronomers unveiled a striking view of the new interstellar visitor 3I/ATLAS on its journey toward the inner solar system.
Categories: Astronomy

Best telescopes for astrophotography in 2025

Space.com - Thu, 07/17/2025 - 10:00am
These are the best telescopes for professional astrophotography and will allow you to capture high-definition images of planets, nebulas and galaxies.
Categories: Astronomy

50 years after a historic handshake in space, the Apollo-Soyuz Test Project's legacy still resonates

Space.com - Thu, 07/17/2025 - 9:00am
On July 17, 1975, an American Apollo crew and a Soviet Soyuz crew met up in Earth orbit for the first time, setting the foundation for continued cooperation in space over the past 50 years.
Categories: Astronomy

Who are the Gorn? 'Star Trek: Strange New Worlds'' reptilian menace, explained

Space.com - Thu, 07/17/2025 - 9:00am
These modern-day Gorn are a major upgrade on the lizard man Captain Kirk battled in the Original Series.
Categories: Astronomy

NASA preps key piece of Artemis IV moon rocket for lunar mission | Space photo of the day for July 17, 2025

Space.com - Thu, 07/17/2025 - 8:00am
NASA moved its payload adapter at the Space Flight Center in Huntsville to prepare for the upcoming Artemis IV mission
Categories: Astronomy

Don't miss the third quarter moon shine near Saturn in the eastern sky tonight

Space.com - Thu, 07/17/2025 - 7:49am
The left-hand side of the moon will appear lit by direct sunlight, with the right bathed in shadow.
Categories: Astronomy

'Doghouse' days of summer — Boeing's Starliner won't fly again until 2026, and without astronauts aboard

Space.com - Thu, 07/17/2025 - 6:00am
NASA and Boeing are still working on the thruster issues that Starliner experienced on its first crewed flight last year, and the spacecraft's next mission will likely launch without astronauts.
Categories: Astronomy

Vigil: ESA’s space weather reporter in deep space

ESO Top News - Thu, 07/17/2025 - 4:00am
Video: 00:01:51

Space weather ‘reporter’ Vigil will be the world’s first space weather mission to be permanently positioned at Lagrange point 5, a unique vantage point that allows us to see solar activity days before it reaches Earth. ESA’s Vigil mission will be a dedicated operational space weather mission, sending data 24/7 from deep space. 

Vigil’s tools as a space weather reporter at its unique location in deep space will drastically improve forecasting abilities. From there, Vigil can see ‘around the corner’ of the Sun and observe activity on the surface of the Sun days before it rotates into view from Earth. It can also watch the Sun-Earth line side-on, giving an earlier and clearer picture of coronal mass ejections (CMEs) heading toward Earth. 

Radiation, plasma and particles flung towards Earth by the Sun can pose a very real risk to critical infrastructure our society relies on. This includes satellites for navigation, communications and banking services as well as power grids and radio communication on the ground. 

A report by Lloyd’s of London estimates that a severe space weather event, caused by such an outburst of solar activity, could cost the global economy 2.4 trillion dollars over five years.  

ESA’s response to this growing threat is Vigil, a cornerstone mission of the Agency’s Space Safety Programme, planned for launch in 2031. Vigil’s data will give us drastically improved early warnings and forecasts, which in turn help protect satellites, astronauts and critical infrastructure on the ground that we all depend on. 

Click here for the subtitled version of the video. 

Click here to access the related broadcast quality video material. 

Categories: Astronomy

Neanderthal groups had their own local food culture

New Scientist Space - Cosmology - Thu, 07/17/2025 - 1:00am
A comparison of cut marks on bones reveals that Neanderthal groups living fairly close to each other had their own distinct ways of butchering animals
Categories: Astronomy