NASA is building a telescope whose whole job is to find the asteroids nobody has spotted yet, especially the dark ones and the ones coming at us out of the Sun's glare. Overnight our time, the agency said the biggest piece of it, a six-metre sunshade that doubles as the solar panel, has finished its testing and is ready to go on.

NEO Surveyor's instrument enclosure is prepared for tests inside Chamber A at NASA's Johnson Space Center in Houston in December 2024. Photo: NASA (public domain), cropped