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

NASA’s Voyager mission completed humankind’s first close-up exploration of the four giant outer planets of our solar system.

Theorbits of Jupiter, Saturn, Uranus and Neptune may have been altered by the fly-by of an enormous object from deep space, billions of years ago. According to a pre-print research paper ...

A new study, currently under review for publication, suggests that an ancient cosmic visitor might have significantly altered the orbits of our solar system's giant planets. Scientists propose that ...

A rare parade of planets will light up the night sky throughout January. Six planets will be in alignment for the rest of the ...

The fastest planetary winds ever found are tearing across a distant gas giant.

Astronomers discovered supersonic winds on a giant gas planet located over 500 light-years from Earth. In a study released ...

Further simulations on flybys into the inner Solar System revealed one of our own planets might be flung out of the ballpark ...

Jan. 15, 2025 — Hot Jupiters are giant planets initially known to orbit alone close to their star. During their migration towards their star, these planets were thought to accrete or eject any ...

A planet-sized visitor possibly visited the solar system billions of years ago and permanently changed the cosmic neighbourhood by warping the orbital path of four outer planets of the system, a ...