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What does the largest moon in the Solar System look like?

Where do comet tails come from?

Immersed in an eerie greenish light, this rugged

Jupiter looks sharp in these two

The cosmic brush of star formation composed

Could there be a tornado inside another tornado?

Ancient footprints found in Lesotho resemble those left by birds, but they were made around 60 million years before the ancestors of birds split from other dinosaurs

The sun's first rays begin illuminating Earth's atmosphere in this photograph from the International Space Station as it orbited 260 miles above the central United States. At far left, the city lights of Chicago, Illinois, are outlined by Lake Michigan. At far right, the city lights of the Dallas/Fort Worth metropolitan area shine through the clouds.

Video: 00:02:16

Scenes from the combined hot-fire test held for Ariane 6 on 23 November 2023. Teams on the ground went through a complete launch countdown followed by a seven-minute full firing of the core stage’s engine, as it would fire on a launch into space.

This video shows the Ariane 6 mobile building opening its doors, the building rolling away to leave the Ariane 6 test model on the launch pad and the seven minutes of firing.

On the launch pad in Kourou, French Guiana, the Ariane 6 test model fired of its Vulcain 2.1 main stage engine for seven minutes. This engine, on a real flight, would work with the boosters to propel the 62-m-tall rocket off Earth and into space. For the test the rocket stayed firmly on the ground, but its engine burnt through 150 000 kg of supercooled liquid oxygen and hydrogen fuel for the duration of a real flight. Not only was the core stage being tested, but all aspects of the launch pad and operations, too, from the delicate procedure of fuelling both the main engine and the orbital stage stacked above it to testing the thermal effects of a launch on mechanical and electrical components.

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There is a surprisingly close link between the flow of nutrient-rich soil around the ancient world and growing biodiversity - which could be a problem now, as human activity is disrupting and degrading soil

We know of around 48,000 inorganic crystal structures, which provide materials with a range of properties. Now, an AI created by Google DeepMind has predicted over 2 million more possibilities

The environmental impact of bitcoin and other cryptocurrencies is increasingly being scrutinised, due to the vast amounts of electricity they consume. Now it seems that water use is also a big problem

Astronomers have spotted an accretion disk feeding matter to a young star and helping it grow in a galaxy outside the Milky Way for the first time.

The orbits of six planets around the star HD 110067 have been in a fixed pattern for billions of years, giving astronomers clues about how they formed

A newfound, and impressively well-maintained, planetary system full of sub-Neptunes could reveal why our solar system lacks such a world.

Physicists are coming to realise that hypothetical particles called axions could explain not only dark matter, but dark energy too, and more besides. Now there is fresh impetus to detect them

Stay up-to-date with the latest news on the total solar eclipse on April 8, 2024.

Elon Musk traveled to Israel on Monday (Nov. 27) and met with Israeli government officials, reaching an agreement about the use of Starlink internet satellites in Gaza.