Portal Space Systems says it has successfully tested its solar thermal propulsion system at operational temperatures inside a ...

In our own solar system, there are pretty good odds that you could stand on the surface of an asteroid and not even be able ...

Asteroid ‘Families’ Reveal Hidden Histories and Impact Risks across the Solar System ...

Between the orbits of Mars and Jupiter lies a ring-shaped region called the asteroid belt, home to the vast majority of our ...

Space scientists look back on 30 years of exoplanet discoveries — from rows of massive ‘super-Earths‘ to worlds with ...

In this curious film, a pair of friends venture out into the desert to build an accurate to scale model of our solar system.

Mercury is tiny, barely bigger than the Moon. Its metallic core makes up 70% of the planet’s mass, vastly exceeding Earth’s ...

From lava worlds to gas giants, NASA says the variety of these worlds is staggering—and that signs of a further 8,000 distant ...

Dwarf planet 2023 KQ14, Ammonite, has a stable orbit that challenges the hypothesis of the mysterious Planet Nine.

An Australian company that is a leader in taking images of spacecraft in low Earth orbit wants to widen its aperture to monitor higher orbits and beyond.

Nasa has discovered over 6,000 exoplanets - planets outside our Solar System and continue to search for Earth-like worlds ...

Federal funding is about to run out for 19 active space missions studying Earth's climate, exploring the Solar System, and ...