A photograph of Comet Leonard that shows its gas tail being disconnected and carried away by the solar wind, has won the top prize at Astronomy Photographer of the Year.
Trojan Asteroid Polymele Has Small Moon sci.news - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from sci.news Daily Mail and Mail on Sunday newspapers.
The 50-meter-wide 2021 QM1 was feared as a possible impact risk in 2052. But despite the nearly insurmountable odds, ESA scientists managed to track the elusive asteroid down.