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

— Anaximander 546 BC

Astronomy

Astronomers discover strange new type of supernova: 'This is the first time we have seen a star that was essentially stripped to the bone'

Space.com - Thu, 08/21/2025 - 4:00pm
A weird and extremely violent new type of supernova in which a massive star was "stripped to the bone," offers a rare glimpse of the interior of a massive star prior to its death.
Categories: Astronomy

We could get most metals for clean energy without opening new mines

New Scientist Space - Cosmology - Thu, 08/21/2025 - 3:00pm
An analysis of active US mines finds they already collect virtually all of the minerals the country needs for batteries, solar panels and wind turbines – but these critical minerals mostly go to waste
Categories: Astronomy

We could get most metals for clean energy without opening new mines

New Scientist Space - Space Headlines - Thu, 08/21/2025 - 3:00pm
An analysis of active US mines finds they already collect virtually all of the minerals the country needs for batteries, solar panels and wind turbines – but these critical minerals mostly go to waste
Categories: Astronomy

The colour of your car has a big impact on urban heat

New Scientist Space - Cosmology - Thu, 08/21/2025 - 3:00pm
Dark-coloured cars can make a measurable difference on nearby air temperature, and in cities of millions the effect can add up and noticeably increase how hot it feels
Categories: Astronomy

The colour of your car has a big impact on urban heat

New Scientist Space - Space Headlines - Thu, 08/21/2025 - 3:00pm
Dark-coloured cars can make a measurable difference on nearby air temperature, and in cities of millions the effect can add up and noticeably increase how hot it feels
Categories: Astronomy

How do the biggest stars in the universe grow so large?

Space.com - Thu, 08/21/2025 - 3:00pm
Some stars in the universe grow to 300 times larger our own sun. But how do they get so big, and how do they sustain their mass?
Categories: Astronomy

If aliens explore space like humans do, NASA scientists know where to look for their signals

Space.com - Thu, 08/21/2025 - 2:00pm
Studying the signals that humanity beams through the solar system has allowed a team of NASA researchers to pinpoint where and when astronomers should hunt for alien technosignatures.
Categories: Astronomy

How to tackle environmental issues when the world can't agree

New Scientist Space - Space Headlines - Thu, 08/21/2025 - 1:26pm
The failure to agree a global treaty on plastic pollution highlights how the UN’s requirement for unanimity holds back environmental policy, but there are better ways to make progress
Categories: Astronomy

How to tackle environmental issues when the world can't agree

New Scientist Space - Cosmology - Thu, 08/21/2025 - 1:26pm
The failure to agree a global treaty on plastic pollution highlights how the UN’s requirement for unanimity holds back environmental policy, but there are better ways to make progress
Categories: Astronomy

Controversial Quantum-Computing Paper Gets a Hefty Correction

Scientific American.com - Thu, 08/21/2025 - 1:15pm

The journal Science has lifted an expression of concern on a paper claiming evidence of Majorana quasiparticles, but concerns linger

Categories: Astronomy

'It's not over!' — 'Invasion' Season 3 clip carries an ominous warning from Trevante (exclusive)

Space.com - Thu, 08/21/2025 - 1:00pm
Our heroic Navy SEAL gets interrogated years after the alien mothership plummets to Earth
Categories: Astronomy

Black Moon darkens August skies — here's how to hunt sparking wonders in the Milky Way this weekend

Space.com - Thu, 08/21/2025 - 12:00pm
The Double Cluster, Wild Duck open Cluster, and Coathanger asterism are on display in August.
Categories: Astronomy

OpenAI Model Earns Gold-Medal Score at International Math Olympiad and Advances Path to Artificial General Intelligence

Scientific American.com - Thu, 08/21/2025 - 11:50am

OpenAI researchers reveal how their experimental model, devoid of any external aids, powered through hours-long proofs to earn a gold-medal score at the International Math Olympiad—and they discuss the project’s origins and describe how such work could help lead to artificial general intelligence

Categories: Astronomy

Cities by the Bay

NASA Image of the Day - Thu, 08/21/2025 - 11:41am
California's San Francisco Bay Area surrounded by the cities of San Francisco, Oakland, and San Jose, and their suburbs, is pictured from the International Space Station as it orbited 260 miles above the Golden State on Aug. 3, 2025.
Categories: Astronomy, NASA

JWST Discovers New Moon of Uranus

Sky & Telescope Magazine - Thu, 08/21/2025 - 11:05am

Astronomers have spotted a new small moon for Uranus in images from earlier this year.

The post JWST Discovers New Moon of Uranus appeared first on Sky & Telescope.

Categories: Astronomy

How to Understand Hurricane Forecasts and the Cone of Uncertainty

Scientific American.com - Thu, 08/21/2025 - 11:00am

Hurricane forecasts feature a “cone of uncertainty,” but what is it actually showing? Scientific American breaks it down for you

Categories: Astronomy

Astronomers trace massive cosmic explosion back 12 billion years. 'This is the most distant event where we can directly see light escaping from around stars'

Space.com - Thu, 08/21/2025 - 11:00am
Astronomers used the Einstein Probe to track a powerful blast of X-rays back to its source in the early universe.
Categories: Astronomy

There might be a 'Planet Y' hiding in the outer solar system

New Scientist Space - Cosmology - Thu, 08/21/2025 - 10:22am
Astronomers have picked up evidence of an Earth-sized world, distinct from the previously hypothesised Planet Nine and Planet X, that might be warping the orbits of objects beyond Neptune
Categories: Astronomy

There might be a 'Planet Y' hiding in the outer solar system

New Scientist Space - Space Headlines - Thu, 08/21/2025 - 10:22am
Astronomers have picked up evidence of an Earth-sized world, distinct from the previously hypothesised Planet Nine and Planet X, that might be warping the orbits of objects beyond Neptune
Categories: Astronomy

Reining in the sun: Venus, Earth and Jupiter may work together to reduce the risk of extreme solar storms

Space.com - Thu, 08/21/2025 - 10:00am
Tidal forces from Earth, Venus and Jupiter may help keep the sun calm, reducing the risk of powerful solar storms that threaten Earth, a new study suggests.
Categories: Astronomy