ISS astronauts photograph two comets soaring over Earth's auroras

Breakthroughs, discoveries, and DIY tips sent every weekday. The interstellar comet 3I/ATLAS has captured the imaginations of both amateur and professional skygazers, but it's not the only icy space rock to recently speed past Earth. In October, a pair of comets known as Lemmon and SWAN also left trails of dust and gas as they continued along their vast orbits through the solar system. As luck had it, their timing perfectly aligned with a wave of vibrant auroras generated by one of this year's largest solar eruptions. And judging from NASA's recently released photos, few people had a better vantage point than the astronauts aboard the International Space Station.