The mysterious Oort cloud is the source of many of our solar system's comets, but astronomers still have no idea what it looks like. Now, new simulations may have given them a first glimpse. When you ...

Astronomers are closing in on one of the most tantalizing possibilities in planetary science, evidence that a previously ...

The Oort cloud is traditionally thought of as a vast shell of perhaps trillions of icy objects encasing our solar system, serving as the final boundary between us and the dark reaches of interstellar ...

An accidental discovery might change how we think about one of the most mysterious structures in our solar system. The Oort Cloud, a large expanse of icy bodies revolving around the sun at a distance ...

Led by Amir Siraj, a doctoral student in astrophysics at Princeton University, the study reveals a tightly bound group of Kuiper Belt Objects (KBOs) near the known “kernel” structure; an established ...