These days, we are treated to glorious images of the cosmos through astrophotography and sophisticated three-dimensional visualizations of the universe. In the early centuries of astronomy, however, ...

A total solar eclipse will be visible from Texas to Maine on Monday. This cosmic event occurs when the Earth, sun, and moon align perfectly. One diagram shows how a total solar eclipse works, and why ...

About 4.5 million years ago, a great cosmic dog kicked past our Solar System – and its effects may still be seen today.

To receive the same amount of starlight as Mars receives from our sun, a planet orbiting an M-type red dwarf would have to be positioned much closer to its star than Mercury is to the sun. Disclaimer: ...

CLEVELAND — With so much focus on the total solar eclipse right now, I thought some stellar solar system facts would shake up your universe. Let me take you back to grade school and the solar system ...

The solar system once had five giant gaseous planets rather than the four it has today. That’s the conclusion from a computer simulation of the solar system’s evolution, which suggests the fifth giant ...

Researchers using a powerful telescope in Hawaii spotted the visiting object, called A/2017 U1, last week. “We have been waiting for this day for decades,” said Paul Chodas, manager of the Center for ...

Then, reading Scott Christianson’s 100 Diagrams that Changed the World, he saw Copernicus’ famous diagram of the planets orbiting around the sun and felt inspired. The solar system is a good analogy, ...

Astronomers might have found evidence of a structure located farbeyond Neptune, potentially giving us clues about the solar ...