All of our solar system’s planets are lining up to parade through the night sky at once. This extraordinary celestial event ...

the closest point in the body's orbit to the sun. (The point at the end of the apsis is the aphelion). For some bodies, like all of the planets of the solar system, the difference between the ...

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

This month offers incredible views of six planets, including Venus-Saturn conjunction. See the dates for all of 2025's ...

That puts it only slightly farther than Mars' current orbit of 1.5 AU from the sun. The simulations show that just one substellar object flyby was sufficient to alter the giant planets' trajectories.

Six planets are parading across the sky, appearing as some of the night's brightest stars. A few easy tips can help you ...

The Red Planet will be at its closest point to Earth, also known as perigee, on Jan. 12 and will be exactly opposite the sun ...

Witness a rare celestial spectacle! Seven planets, including Mercury, Venus, Mars, Jupiter, Saturn, Uranus, and Neptune, will ...

A rare celestial event where seven planets align is visible in the UK skies. Discover how, when, and where you can observe ...

The planet parade occurs when the planets' positions in their elliptical orbit around the sun line make them seem ... to be a memorable experience for all. Don't miss out on this chance to witness ...

The eight major planets of our Solar System orbit the Sun in the same flat plane, and all at different speeds. Mercury, the closest planet to the Sun, completes an orbit – a year for the planet ...