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

When you first learned about the Solar System, you probably saw diagrams that made it look orderly, with planets arranged in ...

A rare parade of planets will light up the night sky throughout January. Six planets will be in alignment for the rest of the month – four of which will be visible with the naked eye, Preston Dyches, ...

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

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

This hypothesis has recently been shared by researchers Garett Brown, Hanno Rein, and Renu Malhotra, who suggest that such an event could explain the unusual orbits of planets in our solar system.

A super-Earth planet that dips in and out of its star's habitable zone has been discovered just 19.7 light-years away.

then it could disprove the notion that there is a ninth planet lurking out in the darkness of our Solar System beyong Neptune. But should the orbits of the new objects follow the trend ...

Jan. 15, 2025 — New observational data and simulation models have confirmed a new type of planet unlike anything found in the Solar System. This provides another piece of the puzzle to ...

Plate tectonics give Earth its mountains, earthquakes, continental drift and maybe even helped give rise to life itself. But do other planets in the solar system have them too?

a star-size object visited the solar system and tweaked these planets' paths. The team carried out 50,000 simulations of such events, using computer models of the four outer planets, each over 20 ...