A planetary nebula (PN, plural PNe), is a type of emission nebula consisting of an expanding, glowing shell of ionized gas ejected from red giant stars late in their lives. The term "planetary nebula" ...
Weeks after NASA's 1999 Hubble repair, the Hubble Heritage Project captured this image of NGC 1999, a nebula in Orion, using the Wide Field Planetary Camera 2. This Hubble image shows RS Puppis, a ...
Scientists agree the sun will die in approximately five billion years, but they weren’t sure what would happen next…until now. A planetary nebula marks the end of 90% of all stars active lives and ...
Using more than 100 spectacular images from the Hubble Space Telescope, Cosmic Butterflies explores the beauty of the most mysterious celestial objects in space, planetary nebulae. The mystery begins ...