Astronomers See the Same Supernova Four Times Thanks to a Gravitational Lens universetoday.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from universetoday.com Daily Mail and Mail on Sunday newspapers.
Surreal Einstein Cross Spotted in Space After Distant Supernova sciencealert.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from sciencealert.com Daily Mail and Mail on Sunday newspapers.
Astronomers use a variety of techniques and instruments — collectively referred to as the cosmic distance ladder — to measure cosmic distances because it is a difficult task.Type Ia.