Bothell, Wash.-based Portal Space Systems shows off the lab where its solar thermal propulsion system will be developed.

The first time you may have heard the term ‘dwarf planet’ was when Pluto got demoted to one in 2006 (RIP). However, we actually have six in our Solar System. Pluto, Ceres, Makemake, Haumea, and Eris ...

The Milky Way is a barred spiral galaxy, about 100,000 light-years across, containing roughly 200 billion stars, and our solar system is located about 26,000 light-years from its center. It takes ...

A combination of cosmic processes shapes the formation of one of the most common types of planets outside of our solar system, according to a new study.

You can harness the power of the sun's rays to charge your electric vehicle. Here's how many solar panels you'll need to do ...

Firefly Aerospace managed to stay upright when it landed on the moon two weeks ago and announced Monday it had completed its ...

Powering spacecraft with solar energy may not seem like a challenge, given how intense the sun's light can feel on Earth.

The stunning comet C/2024 G3 lights up the sunset sky over Chile's Very Large Telescope in this spectacular photo.

The James Webb Space Telescope (JWST) has directly imaged four planets orbiting the host star HR 8799 about 130 light-years ...

Astronomers have discovered four planets that are just a fraction of the mass of Earth orbiting Barnard’s Star, which is 6 ...

The Radcliffe Wave is a massive, undulating structure filled with dense clouds of gas and dust, stretching across several ...