On Christmas Eve, the Parker Solar Probe was set to become the closest spacecraft to the sun, flying within a few million miles of the solar surface.

For billions of years, it's kept our star system well organized through the influence of its powerful gravity. All the planets revolve around ... the Sun and the Earth — of the solar system's ...

The Sun is an incandescent but benevolent dictator. For billions of years, it's kept our star system well organized through the influence of its powerful gravity. All the planets revolve around it ...

A planet parade is when several of our solar system's planets are visible in the night sky at the same time. There will be six planets visible this time around ... to the sun right at sunset ...

The Parker Solar Probe is expected to pass within an "unprecedented" 3.86 million miles of the solar surface on Dec. 24, ...

It comes from a new study of the only star system astronomers know that has a rotating disk of gas and dust around it containing already-formed planets ... like our solar system — is unknown.

Test your knowledge on our solar system, from the biggest and smallest planets to the behemoth mountain on Mars. When you purchase through links on our site, we may earn an affiliate commission.

It's no surprise that space is massive, but even getting to the furthest planet from Earth within our own solar system would ...

For centuries, astronomers have sought to understand the complex dance of planetary motion. The ancient belief that planets ...