"If you wish to make an apple pie truly from scratch, you must first invent the universe."

— Carl Sagan

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The Mystery of the Vanishing Star

Universe Today - Fri, 08/29/2025 - 7:28am

A star 3,000 light years away pulled off the ultimate disappearing act, dimming by 97% for eight months before mysteriously returning to full brightness. This unexpected vanishing trick has finally been solved by astronomers who discovered a massive dust disk and a hidden companion star orchestrating one of the rarest eclipsing events ever observed, a one in a million phenomenon that won't happen again until 2068.

Categories: Astronomy

High-Mass Stars Are Fed By Elongated Streamers Of Gas

Universe Today - Fri, 08/29/2025 - 7:28am

Stars with eight or more stellar masses are termed high-mass stars. There are questions around how these stars can become so massive, since as they form they lose mass through stellar winds and radiation. New research shows that elongated streams of gas that feed these stars explains their high masses.

Categories: Astronomy

The Exposed Core Of This Supernova Is A Headscratcher

Universe Today - Fri, 08/29/2025 - 7:28am

For the first time, astrophysicists have spotted a supernova right before it explodes. This is a rare glimpse inside a massive star before it meets its doom. The star was stripped down to its core, and the observations confirm theories that show stars have onion-like layers.

Categories: Astronomy

Why are weather forecasting apps so terrible?

New Scientist Space - Cosmology - Fri, 08/29/2025 - 7:00am
Weather apps regularly differ in their predictions for the same location – why is it so hard to predict local forecasts, and where can we get the best weather information?
Categories: Astronomy

Why are weather forecasting apps so terrible?

New Scientist Space - Space Headlines - Fri, 08/29/2025 - 7:00am
Weather apps regularly differ in their predictions for the same location – why is it so hard to predict local forecasts, and where can we get the best weather information?
Categories: Astronomy

Subliminal Learning Lets Student AI Models Learn Unexpected (and Sometimes Misaligned) Traits from Their Teachers

Scientific American.com - Fri, 08/29/2025 - 7:00am

AI can transfer strange qualities through seemingly unrelated training—from a love of owls to something more dangerous

Categories: Astronomy

How to See Faster-Than-Light Motion

Scientific American.com - Fri, 08/29/2025 - 6:45am

Superluminal velocities are common but illusory

Categories: Astronomy

20 Years after Hurricane Katrina, Major Forecasting Advances Could Erode

Scientific American.com - Fri, 08/29/2025 - 6:30am

Hurricane forecasts have made huge leaps since Katrina hit 20 years ago, but that progress is threatened by Trump administration cuts to research

Categories: Astronomy

The Science behind Hurricane Katrina: What Researchers Knew before the 2005 Disaster

Scientific American.com - Fri, 08/29/2025 - 6:00am

Two decades after Katrina, we revisit the storm and discuss the evolution of hurricane preparedness since then.

Categories: Astronomy

Watch a burnt and battered Starship splash down in Indian Ocean to wrap up historic Flight 10 (video, photos)

Space.com - Fri, 08/29/2025 - 6:00am
Newly released SpaceX footage gives us great looks at the final moments of Starship's epic Flight 10 test on Aug. 26, which ended with an Indian Ocean splashdown.
Categories: Astronomy

Our verdict on ‘Circular Motion’: this dystopia hit too close to home

New Scientist Space - Cosmology - Fri, 08/29/2025 - 5:50am
The New Scientist Book Club has just finished reading Alex Foster's sci-fi novel “Circular Motion”. We liked it – but there were calls for a bit more science in this slice of science fiction
Categories: Astronomy

Our verdict on ‘Circular Motion’: this dystopia hit too close to home

New Scientist Space - Space Headlines - Fri, 08/29/2025 - 5:50am
The New Scientist Book Club has just finished reading Alex Foster's sci-fi novel “Circular Motion”. We liked it – but there were calls for a bit more science in this slice of science fiction
Categories: Astronomy

Ursula Le Guin's son on why The Dispossessed is (maybe) his favourite

New Scientist Space - Cosmology - Fri, 08/29/2025 - 5:30am
The New Scientist Book Club is currently reading Ursula K. Le Guin's classic science fiction novel "The Dispossessed". Here, her son Theo Downes-Le Guin considers the artistic process behind it – and why it still resonates today
Categories: Astronomy

Ursula Le Guin's son on why The Dispossessed is (maybe) his favourite

New Scientist Space - Space Headlines - Fri, 08/29/2025 - 5:30am
The New Scientist Book Club is currently reading Ursula K. Le Guin's classic science fiction novel "The Dispossessed". Here, her son Theo Downes-Le Guin considers the artistic process behind it – and why it still resonates today
Categories: Astronomy

Read an extract from The Dispossessed by Ursula K. Le Guin

New Scientist Space - Cosmology - Fri, 08/29/2025 - 5:30am
The New Scientist Book Club is currently reading Ursula K. Le Guin’s classic novel The Dispossessed. In this extract from its opening, we get our first glimpse of the planet Anarres
Categories: Astronomy

Read an extract from The Dispossessed by Ursula K. Le Guin

New Scientist Space - Space Headlines - Fri, 08/29/2025 - 5:30am
The New Scientist Book Club is currently reading Ursula K. Le Guin’s classic novel The Dispossessed. In this extract from its opening, we get our first glimpse of the planet Anarres
Categories: Astronomy

This Week's Sky at a Glance, August 29 – September 7

Sky & Telescope Magazine - Fri, 08/29/2025 - 4:57am

Jupiter, Venus, and Mercury continue at dawn. The evening Moon meets Saturn while Fomalhaut looks on. Saturn's own biggest moon casts its shadow onto the planet, for one of the last times for 15 years.

The post This Week's Sky at a Glance, August 29 – September 7 appeared first on Sky & Telescope.

Categories: Astronomy

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APOD - Fri, 08/29/2025 - 4:00am


Categories: Astronomy, NASA

Dusty wisps round a dusty disc

ESO Top News - Fri, 08/29/2025 - 4:00am

For this new Picture of the Month feature, the NASA/ESA/CSA James Webb Space Telescope has provided a fantastic new view of IRAS 04302+2247, a planet-forming disc located about 525 light-years away in a dark cloud within the Taurus star-forming region. With Webb, researchers can study the properties and growth of dust grains within protoplanetary discs like this one, shedding light on the earliest stages of planet formation.

Categories: Astronomy

Sky & Telescope Announces Subscription Access to Website

Sky & Telescope Magazine - Fri, 08/29/2025 - 1:08am

On September 2nd, Sky & Telescope will launch subscription access to our online articles. Subscribe to get full digital access to the website and magazine!

The post Sky & Telescope Announces Subscription Access to Website appeared first on Sky & Telescope.

Categories: Astronomy