A pair of sibling gas giants originally spotted by citizen scientists are so lightweight that their density resembles wispy cotton candy more than a standard atmosphere. The rare duo detailed today in ...

For two nights, the moon will host a cosmic party with three planets – Mars, Saturn and Uranus – that will be visible in the US and beyond.

Researchers in the U.S. have carried out the most stringent tests to date of the idea that an ultraviolet glow in the ...

Dreams of finding a sort of Earth 2.0 motivate much of the thinking around the search for exoplanets. But there is more to ...

Scientists have shown that the giant planets of the solar system could help uncover the nature of dark matter, using faint ...

Two “superpuff” planets orbiting a sunlike star over 1,000 light-years from Earth are as big as Jupiter and as dense as ...

The featherweight pair — orbiting a star 1,110 light-years away — are the biggest exoplanets found to have less density than ...

Astronomers have revealed the most detailed analysis yet of the four planets orbiting Barnard’s Star, one of the closest ...

Barnard’s Star hosts four hostile small planets whose unusual chemistry and orbital rhythm reveal how compact planetary systems can form and survive.

They’re less dense than cotton candy, and they will help astrophysicists better understand the most unusual ways giant ...

Set your alarm for the early hours of 17 June to catch five planets meeting in an alignment in the sky – here’s everything you need to know. On 17 June 2023, Mercury, Uranus, Jupiter, Neptune and ...

The last five-planet alignment occurred in June 2022, marking the first time in 40 years since the last celestial spectacle took place A major part of our solar system will be visible right outside ...