
Latest science news: Comet 3I/ATLAS reappears | New NASA boss nominated | Beaver Supermoon rises
Wednesday, 5 November, 2025: Your daily feed of the biggest discoveries and breakthroughs making headlines.

By Susannah Fisher published
In this excerpt from "Sink or Swim," author Susannah Fisher explores the future of human migration, and what that will look like based on the difficult choices we make in the coming years.

By Harry Baker published
Earth from space A 2019 satellite photo shows the recently resurrected "Marree Man" geoglyph, which mysteriously appeared in the Australian outback in 1998. Experts are still unsure who created it.

By Patrick Pester published
An astronomer has snapped comet 3I/ATLAS using the Lowell Observatory's powerful Discovery Telescope, as well as his own small telescope. The new photos are believed to be the first optical observations of the interstellar visitor since it disappeared behind the sun.

By Tia Ghose published
While excavating in the Valley of the Kings, an Egyptian worker on an archaeological dig discovered a partially obscured step. It would lead into the unlooted tomb of King Tut.

Discover the research changing our understanding of the world

Extraordinary images of our sublime universe

Science questions, answered

Test your knowledge on all things science with our weekly, free crossword puzzle!

Test your knowledge of everything from space to nature

A look at the weird and wonderful species that live on our planet

Unusual case reports from the medical literature

A window onto extraordinary landscapes on Earth

Medical conditions you may never have heard of before

A glimpse into how people lived in the past

Incredible images of our planet from above

Our roundup the biggest discoveries and top science in the news each week

By Brad Reisfeld published
Molds and bacteria can produce dangerous toxins — and they don’t taste very good, either.

By Kit Yates published
It's not just humans who notice optical illusions; certain animals do too, and they often use it to their advantage.

By Sascha Pare published
An orca pod that made headlines last year for gutting a whale shark has struck again, this time perfecting a technique that involves paralyzing young great white sharks to eat their livers.

By Harry Baker last updated
Science crossword Test your knowledge on all things science with our weekly, free crossword puzzle!

By Kit Yates published
Opinion How bad-faith arguments sow doubt by weaponizing scientific humility.

By Kit Yates published
Opinion Thousands of scientific papers are retracted every year because of fraudulent activity, with both authors and journals gaming a system to gain academic acclaim through deceit, dishonesty and false representation.

By Jeanna Bryner last updated
When does daylight saving time end in 2025? Here's a look at when the time changes this year, and why we change our clocks in the first place.

By Andrey Feldman published
A mysterious glow at the center of the Milky Way has puzzled astronomers for more than a decade. New research offers an explanation that could also reshape what we know about dark matter.

By Tia Ghose published
Carolyn Bertozzi and colleagues laid out a way to make paradigm-shifting "click-chemistry" compatible with living cells, opening up a window into living organisms.

By Ben Turner published
Some AI models appear to show a resistance to being shut off. Are they developing a survival drive? Or is it all in how they prioritize tasks?

By Owen Hughes published
Researchers from Peking University say their resistive random-access memory chip may be capable of speeds 1,000 faster than the Nvidia H100 and AMD Vega 20 GPUs.

By Bobby Hellard published
Researchers have developed a chemical structure for an artificial muscle that can lift up to 4,000 times its weight, and they say it could be used in future humanoid robots.
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