The Boomerang Nebula is classified as a protoplanetary nebula, thought to be a star system progressing toward the planetary nebula phase, the final stages of stellar evolution. Scientists believe ...

NASA astronomers have made a groundbreaking discovery in a nearby galaxy, the existence of failed stars that could hold the ...

Many protoplanetary disks in which new planets are formed are much smaller than thought. Using the Atacama Large Millimeter/submillimeter Array (ALMA) scientists of the Leiden Observatory (the ...

There they found 73 protoplanetary disks to examine in closer detail, finding that these planet-forming rings of dust and gas are a lot smaller than we thought. Over the last decade, astronomers ...

shows a potentially destructive white dwarf at the nebula's center; this star may have destroyed a planet. This has never been seen before—and could explain a mysterious ... Many protoplanetary ...