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 ...

Additionally, the team's observations, conducted with the Atacama Large Millimeter/submillimeter Array (ALMA), have revealed that these so-called "protoplanetary disks" are more common than ...

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 ...

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 ...