The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

To get somewhere in outer space, you can’t exactly drive in a straight line. Orbits are tricky things, and sending a probe to ...

Gaia-4b is considered a super-Jupiter planet, a relatively cold gas giant, orbiting its star over 570 Earth-days. That star ...

Astronomers may have discovered a scrawny star bolting through the middle of our galaxy with a planet in tow. If confirmed, ...

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

Astronomers discovered the gas giant planet — dubbed a "hot Jupiter " — in 2016, but have continued to investigate this ...

In August 2006, the International Astronomical Union made the controversial, but correct, decision to demote Pluto from its ...

Baker said that there are other astronomical events that may be more interesting than the parade of planets. Baker said Mars ...

Dec. 19, 2024 — New studies offer a clearer picture of how the outer solar system formed and evolved ... and sent pieces of the red planet hurtling through space. One of these chunks of Mars ...

The OSIRIS-REx mission returned to the sample to Earth in September of 2023, and these studies show that it contains amino ...

While the composition of gas and dust in a molecular cloud is fairly uniform, everything changes once a star begins to form.

These embryos, somewhere between small planetesimals and fully formed planets ... the early solar system," Ben Rider-Stokes, a post-doctoral researcher at The Open University, told Space.com ...