While there is a little wiggle room, the planets in our solar system really are orbiting on mostly the same level. Why do ...

Astronomers have found thousands of exoplanets around single stars, but few around binary stars—even though both types of stars are equally common. Physicists can now explain the dearth.

The origin of super-Earths and sub-Neptunes has been revealed in a system of four young planets that are dramatically losing ...

You can predict the Sun’s distant future by looking far beyond the Solar System. Across the Milky Way, astronomers study ...

Innovation flourishes not because people collaborate more broadly but because the right people fall into productive orbit ...

The days are slowly growing longer. When is daylight saving time? When does spring start in 2026? Here's what we know.

Professor of Earth, Environmental, and Planetary Sciences, University of Tennessee If you’ve seen illustrations or models of the solar system, maybe you noticed that all the planets orbit the Sun in ...

Astronomers have identified a newly discovered exoplanet that may orbit within the outer edge of its star's habitable zone, raising fresh questions about how common potentially life-supporting worlds ...

Why don't planets fall into the stars they orbit if they're constantly being pulled by gravity? Lindsey Coughter Rocky Mount, North Carolina This is a brilliant question because the notion of an orbit ...

The object dubbed Earth's "second moon" is actually a quasi-satellite that's accompanied the planet since 1957 — not a true ...

Tech firms are floating the idea of building data centers in space and tapping into the sun's energy to meet ...

International Space Station, where astronauts have lived and worked for 25 years, is visible to us on Earth. How to see it ...