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

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

The car, launched in 2018 on a SpaceX rocket’s upper stage, is one of many human-made objects in deep space that could ...

Ever since Isaac Newton famously talked about gravity, its dominance as a force in our solar system has been well known. It's ...

ESA’s decade-long Milky Way Gaia mapping mission still has tons of data to release over the next few years. Expect surprises.

Our Solar System is a carefully balanced celestial dance held together by a virtually perfect balance of gravity and inertia.

Have you ever wondered why the planets in our solar system align along a flat plane? Discover the science behind this cosmic arrangement, from the formation of the protoplanetary disk to the forces ...

Scientists studying samples that NASA collected from the asteroid Bennu found a wide assortment of organic molecules that ...

Europe will first be covered and "darkened" in order to absorb the Sun from space. This comes at a global expense and needs ...

While Resilience and Blue Ghost are in orbit and preparing to leave for the moon, another lunar lander — Intuitive Machines ' IM-2, or Athena — recently arrived at Cape Canaveral to loaded atop of a ...

When astronomers found a large world farther out than Pluto, it became one of the final nails in the coffin of our ninth ...

Long ago, a planetary object eight times the mass of Jupiter may have once visited the solar system and altered […] The post ...