The forces of rotation caused red hot masses of stones to be torn away from the Earth and to be thrown into the ether, and this is the origin of the stars.

— Anaxagoras 428 BC

Astronomy

How much has Mercury shrunk?

Space.com - Sun, 08/17/2025 - 11:00am
Mercury is still shrinking as it cools in the aftermath of its formation; new research narrows down estimates of just how much it has contracted.
Categories: Astronomy

See a trio of spectacular star clusters brighten the summer sky in August 2025

Space.com - Sun, 08/17/2025 - 10:00am
The Hyades, Pleiades and Hercules star clusters make for excellent targets in the late summer months.
Categories: Astronomy

Mercury quiz: How well do you know the Swift Planet?

Space.com - Sun, 08/17/2025 - 9:00am
This quiz will explore the facts, the fun and the fascinating quirks of our solar system’s speedster, Mercury
Categories: Astronomy

How the nature of environmental law is changing in defense of the planet and the climate

Space.com - Sun, 08/17/2025 - 8:00am
The effects of Earth's changing climate is driving up the number of legal suits related to environmental issues
Categories: Astronomy

NASA and Google test AI medical assistant for astronaut missions to the moon and Mars

Space.com - Sun, 08/17/2025 - 6:00am
Google and NASA are trialing an AI-powered medical assistant that could help astronauts care for themselves when mission control is out of reach.
Categories: Astronomy

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

<p><a href="https://apod.nasa.gov/apod

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

What's that strange light down the road?


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

Comet's Water Reveals Clues About Life on Earth

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

A team of scientists have made a discovery that could help solve one of Earth's greatest mysteries, where did our planet's water come from? Using powerful radio telescopes, the researchers have detected water vapour in a comet located far beyond Neptune's orbit, and the results are changing our understanding of how life sustaining water arrived on our world.

Categories: Astronomy

SpaceX aims to launch Starship Flight 10 test flight on Aug. 24

Space.com - Fri, 08/15/2025 - 5:55pm
SpaceX is targeting Aug. 24 for the 10th Flight Test for its Starship rocket, following delays from a pad accident and May's failed mission.
Categories: Astronomy

Cholera Plagues Sudan amid Civil War, and Climate Change Is Making It Worse

Scientific American.com - Fri, 08/15/2025 - 5:30pm

An ongoing civil war in Sudan has forced millions of people to flee their homes and move to camps, where a lack of water and sanitation infrastructure, along with heavy rains, are fueling a massive cholera outbreak. What role does the environment play in how the outbreak is spreading?

Categories: Astronomy

Blue Origin's 2nd New Glenn rocket launch will fly twin NASA Mars probes to space on Sep. 29

Space.com - Fri, 08/15/2025 - 5:00pm
Blue Origin's powerful New Glenn rocket will launch NASA's ESCAPADE Mars mission no earlier than (NET) Sep. 29.
Categories: Astronomy

Human Embryo Implantation Revealed in First-Ever 3D Images

Scientific American.com - Fri, 08/15/2025 - 4:45pm

Analyzing embryo movements in uteruslike environments could offer clues to improving the success rate of in vitro fertilization

Categories: Astronomy

NASA wants new spacecraft to fly to hard-to-reach orbits around Earth and in deep space

Space.com - Fri, 08/15/2025 - 4:00pm
NASA has awarded $1.4 million to six companies, to further their ideas about how to get vehicles farther into space cheaply and efficiently.
Categories: Astronomy

Russia to launch 75 mice, 1,000 fruit flies on Aug. 20 to study spaceflight effects

Space.com - Fri, 08/15/2025 - 3:00pm
Russia is readying its Bion-M No. 2 biosatellite for a planned Aug. 20 launch. The mission will send 75 mice and other specimens on a monthlong mission to Earth orbit.
Categories: Astronomy