A shell of icy objects at the edge of the solar system known as the Oort cloud has a pair of spiral arms that resemble a miniature galaxy, new research suggests.
New evidence suggests that conditions in the early universe may have shaped star formation in surprising ways.
The mysterious Oort cloud is the source of many of our solar system's comets, but astronomers still have no idea what it ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback