Stargazers will be treated to a rare seven-planet alignment in February. This is what scientists hope to learn.

The seven planets will not be perfectly aligned, but will appear in an arc across the sky due to their orbital plane in the Solar System.

Here’s what you should know when you go outside to see for yourself: Yes, the planets are indeed lined up across our sky. No, ...

“Surprisingly, many of these so-called trans-Neptunian objects move on eccentric orbits that are inclined relative to the common orbital plane of the planets in the solar system.“ Pfalzner and ...

An event called a "ring plane crossing" will occur between Saturn and Earth on March 23, 2025, when Saturn's rings will ...

All seven of the other planets in our solar system are about to become visible at once in a great planetary alignment – here’s how to spot the celestial show ...

The Sun is the largest object in the Solar System. The Sun’s huge gravitational field keeps many other objects – planets, dwarf planets, asteroids and comets – in orbit around it.

Mention the word “mercury” and one of two things comes to mind: the silvery metal that is liquid at normal temperatures, or ...

Gravity provides the force needed to maintain the stable orbit of planets around a star and also of moons and artificial satellites around a planet. The moons around planets in the Solar System ...

The planets are not exactly lined up, so they will appear in an arc across the sky due to their orbital plane in the Solar System. During clear nights in January and February, all of the planets ...