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 ...

This may explain the strange properties of the orbits of our solar system's planets ... orbits of many planets. More NASA, ESA, Caltech / ISTOCK / GETTY IMAGES PLUS "[T]he puzzle for theoretical ...

Play the USA TODAY Daily Crossword Puzzle. Six planets that will ... a planetary parade is "a celestial event where multiple planets in our solar system appear close together in the night sky ...