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

All seven of the other planets in our solar system are about to become visible at once in a great planetary alignment – here’s how to spot the celestial show ...

Mercury takes only 88 Earth days to orbit the sun.

Long ago, a planetary object eight times the mass of Jupiter may have once visited the solar system and altered […] The post A Mysterious Object Visited Our Solar System And Altered The Orbits Of Four ...

An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit before shoving four of the solar system's planets onto a different course.

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 ...

A planet parade is when several of our solar system's planets are visible in the ... Hemisphere will be just after sunset at around 8:30 p.m. local time. You still might be able to catch Venus ...

This may explain the strange properties of the orbits of our solar system's planets, which are not quite ... most likely scenario involved an object eight times the mass of Jupiter zipping nearly ...

To better understand why the planets have variable compositions ... to the formation of the gas and ice giants in the outer solar system. This first-order model of planetary growth in the solar ...

Scientists believe that two asteroids might be fragments of long-lost "planetary embryos" from the early solar system.

All of our solar system’s planets are lining up to parade through the night sky at once. This extraordinary celestial event will see the sky scattered with seven visible planets in what is known ...