Harvard astornomer Avi Loeb suggests interstellar object 3I/ATLAS could've sent off the Wow! Signal back in 1977.

Bizarre NASA discoveries that we’re not allowed to talk about (but we will) Space exploration consistently reveals phenomena ...

Our solar system just got another guest from the galaxy. Find out how scientists spotted this third interstellar object, what they’re learning about it, and why it might be our best chance yet to ...

His new book makes the case for going big on solar power—and abandons climate angst for ecomodernist optimism.

It's easy to think that Neptune is the coldest planet in the solar system because it is the farthest from the Sun. Astronomers have been puzzled for years by the fact that Uranus is the coldest planet ...

On August 24, 2006, our solar system lost a planet. It wasn't by cataclysmic destruction, but rather by the vote of the International Astronomical Union, which declared that Pluto, considered the ...

Astronomers have uncovered a massive new trans-Neptunian object, 2017 OF201, lurking at the edge of our solar system. With an orbit stretching 25,000 years and a size that may qualify it as a dwarf ...

Last month, Google quietly killed off Google Sky Maps. But there’s still another way to virtually explore most of the solar system a la Google Maps: it’s called Google Maps in Space. Google Maps in ...

NASA's Psyche orbiter looked back and snapped a photo of Earth with the moon on its way to the asteroid Psyche in 2029. Credit: NASA / JPL-Caltech / ASU illustration As a NASA spacecraft whizzed away ...

The workings of our solar system are roughly the same now as they have been for millions of years. Moons circle their planets, the planets circle the sun, the sun’s magnetic fields and sunspots wax ...

While its star projector leaves a lot to be desired, the Science Can Solar System Planetary Projector is a fantastic educational tool for kids, with its solar system model, complete with talking ...

LITTLETON, Colorado, Aug 6 (Reuters) - U.S. President Donald Trump's scrapping of subsidies and tax breaks for renewable energy developers has stalled but not derailed solar power capacity growth ...