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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Moon quiz: For all lunatics

Space.com - Sat, 08/16/2025 - 12:00pm
Think you know Earth's moon? Test your knowledge in a lunar quiz!
Categories: Astronomy

Scientists just recreated the universe's first ever molecules — and the results challenge our understanding of the early cosmos

Space.com - Sat, 08/16/2025 - 11:00am
In a first, scientists have recreated the formation of the first ever molecules in the universe to learn more about early star formation.
Categories: Astronomy

This Week In Space podcast: Episode 173 — The Return of the Malik

Space.com - Sat, 08/16/2025 - 10:11am
On Episode 173 of This Week In Space, Rod Pyle and and Tariq Malik look back at the week in space news.
Categories: Astronomy

If everyone in the world turned on the lights at the same time, what would happen?

Space.com - Sat, 08/16/2025 - 10:00am
Beyond powering lights, it's also important to think about where all that light would go.
Categories: Astronomy

Titan darkens Saturn in rare shadow transit on Aug. 19: Here's how to see it

Space.com - Sat, 08/16/2025 - 9:00am
The second largest moon in the solar system will cast its shadow over Saturn on Aug. 19.
Categories: Astronomy

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APOD - Sat, 08/16/2025 - 8:00am


Categories: Astronomy, NASA

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APOD - Sat, 08/16/2025 - 8:00am


Categories: Astronomy, NASA

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APOD - Sat, 08/16/2025 - 8:00am

What lies in the heart of Orion?


Categories: Astronomy, NASA

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APOD - Sat, 08/16/2025 - 8:00am

Where are all of these meteors coming from?


Categories: Astronomy, NASA

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APOD - Sat, 08/16/2025 - 8:00am

Everybody sees the Sun.


Categories: Astronomy, NASA

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APOD - Sat, 08/16/2025 - 8:00am

What's that strange light down the road?


Categories: Astronomy, NASA

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APOD - Sat, 08/16/2025 - 8:00am

The camera battery died about 2am local time


Categories: Astronomy, NASA

Tiny devices propelled by sunlight could explore a mysterious region of Earth's atmosphere

Space.com - Sat, 08/16/2025 - 8:00am
"Being able to send something out there would enable us to take a lot more precise data than we currently can."
Categories: Astronomy

How Did Jupiter's Galilean Moons Form?

Universe Today - Sat, 08/16/2025 - 7:54am

We already know a decent amount about how planets form, but moon formation is another process entirely, and one we’re not as familiar with. Scientists think they understand how the most important Moon in our solar system (our own) formed, but its violent birth is not the norm, and can’t explain larger moon systems like the Galilean moons around Jupiter. A new book chapter (which was also released as a pre-print paper) from Yuhito Shibaike and Yann Alibert from the University of Bern discusses the differing ideas surrounding the formation of large moon systems, especially the Galileans, and how we might someday be able to differentiate them.

Categories: Astronomy

A Cosmic Noon Puzzle: Why Did Cosmic Noon Galaxies Emit So Many Cosmic Rays?

Universe Today - Sat, 08/16/2025 - 7:54am

The Universe's early galaxies were engulfed in halos of high-energy cosmic rays. It's likely because they had tangled and turbulent magnetic fields. These fields accelerate cosmic rays to higher energies.

Categories: Astronomy

China’s Crewed Lunar Lander Passes Key Test Milestone

Universe Today - Sat, 08/16/2025 - 7:54am

China took a step closer to the Moon, with the first short test for their crewed lunar lander. The test was completed on Wednesday, August 6th at a facility in China’s northern Hebei Province, and lasted just under 30 seconds. The tethered test successfully demonstrated the integration and performance of key systems, simulating descent, guidance, control and engine shutdown. This marks the first test for a China’s Manned (crewed) Space Agency (CMSA’s) human-rated lander.

Categories: Astronomy

JPL Is Ready To Test Mars Samples - If They're Ever Returned

Universe Today - Sat, 08/16/2025 - 7:54am

Taking a walk is great for inspiration. There have been numerous studies about how people think more clearly on walks, and how new ideas come to them more frequently while doing so. That’s part of the reason some of the most famous minds in history included a daily walk in their schedule. Just such an inspiration must have happened recently to Nicholas Heinz, a scientist at NASA’s Jet Propulsion Laboratory (JPL) in California. On a hike in Arizona he found a rock that could be used as an analog of a unique one found by the Perseverance rover on Mars - and decided to take it back to his lab to study it.x

Categories: Astronomy

How Climate Change Will Reshape Space Weather's Impact on Satellites

Universe Today - Sat, 08/16/2025 - 7:54am

Climate change isn't just transforming weather on Earth's surface, it’s also fundamentally altering how space weather affects the thousands of satellites orbiting our planet. New research reveals that rising carbon dioxide levels will dramatically change how geomagnetic storms impact the upper atmosphere, creating both opportunities and challenges for the satellite industry in the decades ahead.

Categories: Astronomy

How Gecko Feet Could Save Space Travel

Universe Today - Sat, 08/16/2025 - 7:54am

Space is getting dangerously crowded. More than 50,000 pieces of debris larger than 10 centimetres are currently hurtling around Earth at breakneck speeds, turning Earth orbits into veritable minefields. Dead satellites, rocket fragments, and collision debris pose such a serious threat that the International Space Station regularly performs emergency manoeuvres to dodge potential impacts. Now, an international team of researchers thinks they've found an elegant solution to this growing crisis and it's inspired by a humble house gecko's amazing ability to walk on walls.

Categories: Astronomy

New Theory Points to the Universe's Greatest Fireworks Show

Universe Today - Sat, 08/16/2025 - 7:54am

What if the universe began with a fireworks show? A new theory suggests that supermassive black holes, the mysterious giants found at the heart of galaxies, were born from the universe's very first stars in a spectacular flash of light that ionised all of space before vanishing forever. This dramatic "Pop III.1" model could finally explain how these giant stellar remnants grew so impossibly large so quickly after the Big Bang, while potentially solving several major puzzles plaguing modern astronomy, from the Hubble Tension to the nature of Cosmic Dawn itself.

Categories: Astronomy