In the early centuries of astronomy, however, our visions of the cosmos often took the shape of diagrams—representing what we believed about our solar system. What’s remarkable about Claudius ...

An accidental discovery in an astronomy show offers researchers a new clue about the mysterious Oort Cloud, a large expanse of icy bodies revolving around the sun.

A simple diagram, which celebrates its centennial ... from gargantuan red supergiants that span the size of a modest solar system to hyperdense white dwarf stars and black holes that are smaller ...

Let me take you back to grade school and the solar system diagram. Can’t you picture it? All of our planets, (Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune), circling around our ...

Diagram showing the path of A/2017 U1 through the inner solar system. [Diagram: NASA/JPL-Caltech] According to Space.com, when it was first observed, scientists at first assumed it was a comet but ...