Europa Clipper is the biggest interplanetary spacecraft that NASA has ever built. At launch, it will weigh about 12,500 pounds — nearly half of that is propellant. When unfurled, its solar panels will ...
You have just a few weeks left to view the "comet of the century" making its 80,000-year orbit around Earth. Comet C/2023 A3 Tsuchinshan–ATLAS will be visible with the naked eye from Earth until late ...