The enormous visitor to our solar system may have been about 8 times the mass of Jupiter, and come nearly as close to the sun ...

A close encounter with a mysterious interstellar object could explain the current orbits of several of Earth’s largest ...

The sun’s solar wind, made of charged particles, interacts with powerful eruptions, affecting cosmic rays and space weather.

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

The sun, a searing hot sphere of gas primarily composed of hydrogen and helium, boasts surface and outer atmospheric ...

Emily Simpson has loved space since she was a 10-year-old kid celebrating her birthday at a planetarium. Now a recent Florida ...

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

Imagine setting off on a road trip that doesn’t just take you through charming towns, but through an entire solar system – ...

Southwest Research Institute’s Dr. Lisa Upton has received the 2025 Karen Harvey Prize from the American Astronomical Society ...