There are a couple of ways that scientists can date planets, so which planets formed first in our solar system?

A new study suggests yet another theory for a possible extra planet in our solar system, likely of a size between Mercury and ...

The Copernican Principle, named in honor of Nicolaus Copernicus (who proposed the heliocentric model of the Universe), states ...

CHICAGO (WLS) -- "Understanding the Universe" is a new ABC 7 Eyewitness News streaming show series. Adler Planetarium Astrophysicist Michael Zevin stopped by the studio to help us better understand ...

This cosmic visitor is now officially named 3I/ATLAS, and it appears to be a comet from another solar system. reading time 3 minutes Update: July 3, 09:24 a.m. ET: On Wednesday, July 2, the ...

A team of astronomers has attempted to track the path of interstellar object 3I/ATLAS back into the past, tracing its path ...

Welcome to SolarBalls, where animated content combines entertainment with education about the solar system and the universe.

Dementia is one source of confusion. But as the April 8 total eclipse of the sun approaches and things astronomical come front and center, we’re at risk for another. It’s an expanse so expansive that ...

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. When ...

The rate of finding these distant worlds has recently increased, with astronomers scrambling to accommodate the data ...

Most comets, including the well-known Halley's, loop through our solar system like cosmic time capsules that formed alongside our Sun and planets around 4.5 billion years ago. But every now and then, ...

Behold the sun and all of it's glory. Learn all things about the sun ranging from its beginning to its death. Also learn about how stars work in general and MUCH MUCH more. Visit the planet most like ...