"When beggars die, there are no comets seen;
The heavens themselves blaze forth the death of princes."

— William Shakespeare
Julius Cæsar

Astronomy

Sunspot crackling with magnetic 'bombs' is now turning toward Earth (photo)

Space.com - Fri, 07/11/2025 - 3:00pm
Astrophotographer Philippe Tosi captured explosive Ellerman bombs on the sun's surface as an active sunspot turned toward Earth.
Categories: Astronomy

Elon Musk's New Grok 4 Takes on ‘Humanity’s Last Exam’ as the AI Race Heats Up

Scientific American.com - Fri, 07/11/2025 - 2:30pm

Elon Musk has launched xAI’s Grok 4—calling it the “world’s smartest AI” and claiming it can ace Ph.D.-level exams and outpace rivals such as Google’s Gemini and OpenAI’s o3 on tough benchmarks

Categories: Astronomy

I couldn't keep quiet about $1000 off the Sony A7R V in this anti-Prime Day deal

Space.com - Fri, 07/11/2025 - 2:22pm
The Sony A7R V mirrorless camera plunges to just $3200 at Walmart, a staggering $1000 saving that eclipses Amazon's Prime Day price!
Categories: Astronomy

The Fortress of Solitude: Every live-action incarnation of Superman's iconic ice hideout

Space.com - Fri, 07/11/2025 - 2:00pm
As the newest Superman film hits theaters, we cast our X-ray vision back on every live-action incarnation of the Fortress of Solitude, from its 1978 debut to its 2025 return.
Categories: Astronomy

Don't miss the last full 'Manhattanhenge' sunset of 2025 light up NYC today

Space.com - Fri, 07/11/2025 - 1:47pm
"July Manhattanhenge is what I call the goodbye to the grid."
Categories: Astronomy

Putting the X-59 to the Test

NASA Image of the Day - Fri, 07/11/2025 - 1:46pm
Researchers from NASA and the Japanese Aerospace Exploration Agency (JAXA) recently tested a scale model of the X-59 experimental aircraft in a supersonic wind tunnel located in Chofu, Japan, to assess the noise audible underneath the aircraft. The test was an important milestone for NASA’s one-of-a-kind X-59, which is designed to fly faster than the speed of sound without causing a loud sonic boom.
Categories: Astronomy, NASA

These Amazon Prime Day deals must end tonight — don't miss out on big savings across skywatching optics

Space.com - Fri, 07/11/2025 - 1:38pm
It's the last day of Amazon Prime Day and some of these deals are ending tonight. Grab some new optics in time to see Saturn's rings!
Categories: Astronomy

Last chance budget-friendly Prime Day star projector deal — now under $14

Space.com - Fri, 07/11/2025 - 12:44pm
We tested the YGiTK Northern Galaxy Lights Projector and loved its multifunctionality and near-silent operation — today's your last chance to save 26%.
Categories: Astronomy

Billionaire private astronaut Jared Isaacman donating $15 million for Space Camp programs

Space.com - Fri, 07/11/2025 - 12:31pm
Jared Isaacman, the billionaire private astronaut who until recently was on track to lead NASA, is donating $15 million to the U.S. Space & Rocket Center for its Space Camp programs.
Categories: Astronomy

Marjorie Taylor Greene Plans Hearing on Geoengineering amid Cloud Seeding Conspiracy Theories

Scientific American.com - Fri, 07/11/2025 - 11:30am

Republican Representative Marjorie Taylor Greene of Georgia has said she will hold a hearing on geoengineering as conspiracy theories have swirled around cloud seeding after the recent floods in Texas

Categories: Astronomy

Asteroid 2024 YR4 won't Earth but it could still ruin your day: Here's how

Space.com - Fri, 07/11/2025 - 11:00am
Earth may be safe from an impact by the asteroid 2024 YR4, but it still has a chance of striking the moon. This lunar impact could pose a risk to space tech and astronauts.
Categories: Astronomy

Today is your last chance to save a massive $165 on one of the best camera drones for Amazon Prime Day

Space.com - Fri, 07/11/2025 - 10:32am
You can save a massive $165 on the DJI Air 3, one of the best camera drones, which we think is the perfect balance of power and portability.
Categories: Astronomy

Today is your last chance to save 20% on the most iconic starship in the Star Wars universe this Amazon Prime Day

Space.com - Fri, 07/11/2025 - 10:09am
The Lego Star Wars Millennium Falcon set is a faithful reproduction of the most legendary Star Wars starship; you'll have to make the Kessel Run in less than twelve parsecs to grab one, though.
Categories: Astronomy

As NASA's budget shrinks, Europe doubles down on Earth science: 'Climate change is the defining challenge of our generation'

Space.com - Fri, 07/11/2025 - 10:00am
If NASA must pull back, Europe is ready to step up — and do so with open arms.
Categories: Astronomy

NASA SLS rocket booster spews fire | Space photo of the day for July 11, 2025

Space.com - Fri, 07/11/2025 - 9:24am
The test encountered an anomaly.
Categories: Astronomy

Week in images: 07-11 July 2025

ESO Top News - Fri, 07/11/2025 - 9:10am

Week in images: 07-11 July 2025

Discover our week through the lens

Categories: Astronomy

Artificial cooling 'urgent' for Great Barrier Reef after warming spike

New Scientist Space - Cosmology - Fri, 07/11/2025 - 9:00am
A drop in shipping emissions has caused a surge in warming at the Great Barrier Reef, fuelling calls for drastic actions such as marine cloud brightening to lower the risk of coral bleaching
Categories: Astronomy

Artificial cooling 'urgent' for Great Barrier Reef after warming spike

New Scientist Space - Space Headlines - Fri, 07/11/2025 - 9:00am
A drop in shipping emissions has caused a surge in warming at the Great Barrier Reef, fuelling calls for drastic actions such as marine cloud brightening to lower the risk of coral bleaching
Categories: Astronomy