One million alien visitors from another star system could already be lurking in the solar system. We aren't talking about "little green men" here, however — more "little (and not so little) gray ...

As the Moon moves opposite the Sun in its orbit, it will pass through Earth’s shadow ... leaving in its wake an eclipse diagram with the times at various stages of the eclipse. Credit: NASA’s ...

We investigate the greatest mysteries in the world of science and technology and bring you their most interesting and bizarre ...

The Oort Cloud, technically, isn't a confirmed place. It's a theoretical location. Some comets orbit the Sun over hundreds of thousands or even millions of years. They must, therefore, call ...

Ellipses are defined as curves that surround two focal points. At any point on the ellipse, the sum of the distance to both ...

Only four other comets have ever shown such activity while approaching from more than 20 astronomical units (AU) from the Sun — as far out as the orbit of Uranus. (One AU is the average Earth ...

Comet C/2023 P1, Nishimura visible from Earth. Credit: NASA/JPL-Caltech | edited by Space.com Russia Responds to Ukraine-US Ceasefire Agreement If your tax return contains any of these 3 red flags ...

"These objects really could be anywhere in the solar system at any given time." One million alien visitors from another star system could already be lurking in the solar system. We aren't talking ...

Climate change is already causing all sorts of problems on Earth, but soon it will be making a mess in orbit around the planet too, a new study finds. Part of the greenhouse effect that warms the ...

These Phase 1 satellites, as OroraTech has designated them, will orbit at a steep 97-degree inclination, at an altitude of 340 miles (550 kilometers) above Earth, and are the humble beginning in a ...