Earth may have a moon today because a nearby neighbor once crashed into us, a new analysis of Apollo samples and terrestrial ...

Interstellar comet 3I/ATLAS is now within 300 million km of Earth. Discover why NASA and ESA are tracking this ancient ...

"A three-body problem is extremely complicated. Now we're dealing with four: the sun, Earth, the moon and Mars. The heavy ...

Physicists have precisely measured how much faster time moves on Mars compared to Earth. This discovery, which factors in ...

Ask someone on Earth for the time and they can give you an exact answer, thanks to our planet's intricate timekeeping system, ...

Interstellar comet 3I/ATLAS, only the third ever seen, returns with unique composition; experts eye 19 December 2025 as a date that could reshape comet science.

Learn how Albert Einstein’s theory reveals that time on Mars runs faster than on Earth — and why that tiny shift matters for ...

Illustration: Xihe sun exploration satellite "With the help of the Xihe satellite, we can obtain full-disk solar spectra at more than 300 wavelength points simultaneously every 46 ...

Fresh images of interstellar object 3I/ATLAS show strange, tail-less behaviour and a perfectly symmetric coma, sparking ...

Calendars found in homes across the country usually say winter begins on Dec. 21, when in reality the season starts three ...

3I/ATLAS is only the third known interstellar visitor, hence the prefix “3I.” The second known interstellar body, Comet 2I/Borisov, was discovered by the Russian astronomer Gennady Borisov in August ...

According to the Met Office, the UK is more likely to see snow in January and February than in December, with snow actually settling on the ground (snow lying) an average of 3 days in December, ...