Simpson and Chen ran mathematical models looking at how differently sized Earth-like worlds would have affected the rest of ...

Six of our cosmic neighbors are expected to line up across the night sky tonight, in what has been dubbed a "planetary parade ...

A world-leading designer of space robots says gigantic new rockets being tested by billionaires Elon Musk and Jeff Bezos are ...

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

Stargazers will be treated to a dazzling six-planet "alignment" this January.

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

A new study claims it is possible an "alien visitor" could have warped our solar system during its earliest years.

2025 is starting off with a bang for skygazers, with a planet parade now visible in the night sky. A planet parade is when ...

Mars is known as the 'Red Planet.' Learn about its reddish hue, caused by iron oxide, its position as the fourth planet from ...

Tonight and throughout January, stargazers can see a planetary alignment in the night sky or what some are calling a ...

In the early evening, look to the southwest and you'll see Venus (the brightest object in the sky after the Sun and Moon) and ...