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

Objects that orbit the planet are dragged down by the lingering air density, spiraling closer to the planet until eventually reentering the atmosphere, often burning up as they do. According to the ...

The United States Space Force’s secretive X-37B space plane touched down to earth on Friday after spending 434 days in orbit conducting mysterious tests. The unmanned Boeing-made aircraft landed ...

Caltech researchers have mathematical evidence suggesting a Neptune-sized Planet X may exist deep in the solar system in an orbit far beyond Pluto. Planet X could have a mass about 10 times that of ...

The United States Space Force released a rare photo of its secretive X-37B space plane in orbit. The image, shared on X by the agency, is the first-ever image that has been shown to the public ...

For over 40 years, astronomers have been puzzled by strange X-ray signals from the Helix Nebula’s white dwarf. Now, they may ...

Last week, the US Space Force posted a photo online from its uncrewed X-37B space plane's seventh mission, showing the orbital test vehicle above our planet in High Earth Orbit over 22,000 miles away.