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After Apollo 12's two moonwalks in 1969, command-module pilot Richard Gordon initially refused to let crewmates Charles "Pete" Conrad and Alan Bean enter the clean spacecraft until they removed their dust-covered spacesuits. Conrad and Bean had returned from the lunar surface coated in fine grey dust that Gordon compared to a black cloud drifting through the lunar module.

A network of Starlink satellites designed primarily for internet connectivity is giving scientists a new way to study one of the hardest-to-observe regions of Earth's atmosphere. According to a study by researchers at Kyoto University, publicly available orbital data from roughly 1,200 Starlink satellites were used to estimate the density of the thermosphere at an altitude of about 482 kilometres.

Abhijeet Dipke and his CJP have put the poor condition of government schools in focus. But barging into classrooms risks putting schoolchildren in the crosshairs. The activists should keep raising the issues and force officials to take heed, but schools aren't public spaces and the CJP has no special authority to enter them.

Sophie Adenot's first spacewalk was supposed to be about replacing an antenna. Instead, the 18 August outing left the French astronaut with two milestones to carry back inside the International Space Station: becoming the first French woman to walk in space, and an unfinished repair that will require another trip outside.

According to a study published in Science Advances, Mars probably had hot, water-rich environments almost as soon as its crust began forming. Researchers examined a tiny 'zircon' crystal preserved inside the Martian meteorite Northwest Africa 7034, better known as 'Black Beauty,' and found chemical and structural clues suggesting that hot, water-rich fluids were present around 4.45 billion years ago.