Scientists have previously found old stars surrounded by disks of debris ... when they and the shell of gas that surrounds them are known as planetary nebulae. In one of them, called WeSb 1 ...

One of the most photographed objects in the night sky is the Ring Nebula ... old astronomical friend." These findings help scientists better understand the processes that sculpt complex planetary ...

The Ring Nebula as captured ... "a brand new view of an old astronomical friend." These findings help scientists better understand the processes that sculpt complex planetary nebulas, which ...