An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit ...

Long ago, a planetary object eight times the mass of Jupiter may have once visited the solar system and altered […] The post ...

It actually follows its own tiny elliptical orbit around what is called the center of gravity (the barycenter) of the system, the sun and the orbiting planets. This barycenter is usually not equal ...

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

Located less than 20 light years away, HD 20794d could potentially be one of the most Earth-like planets found so far, ...

When astronomers found a large world farther out than Pluto, it became one of the final nails in the coffin of our ninth ...

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.

Earth's unusual orbit through hot and cold conditions tests the limits of tolerability for any known lifeforms.

Stargazers are in for a treat early this new year, as the sky is full of stars - quite literally so!January is set to witness ...

While planets circle the sun in what's called and heliocentric orbit, they rarely fall together in what appears to the human ...

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

Named HD 20794 D, the newly discovered exoplanet orbits a star similar to the Sun, and researchers believe it may be able to ...