Planet Y may orbit closer than ‘Planet Nine’ A hidden planet could explain tilted KBO orbits New study suggests a rocky world like Earth ...

A low-density, puffy planet orbiting relatively far from a young star in a nearly perpendicular orbit. What's going on? If you think you've met the wildest exoplanet yet, you haven't learned about TOI ...

Astronomers believe they have uncovered evidence of a previously unknown ninth planet lurking in the not-too-distant reaches of the solar system. This hypothetical world, dubbed "Planet Y," could be ...

Astronomers have discovered a distant dwarf planet orbiting beyond Neptune — a frozen world so far from the Sun that it challenges everything we know about how the solar system formed. Man Watched ...

When you see art of our solar system as the planet orbit the sun, you may notice that Earth's orbit has a tilt. It is not a perfect circle. What's more, Earth is not the only planet that displays such ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Planetary scientists are split, oscillating between two main theories that explain the order in ...

About 4.6 billion years ago, a celestial cloud collapsed, paving the way for our solar system to form. Then, a nebula with strong gravitational pull took shape, kick-starting the birth of the sun. But ...

In an impressive illustration of the enormity of space, NASA recently discovered a space rock roughly the size of Manhattan, just a few months before it was set to fly near Mars. Up to that point, the ...

"Though our Mars orbiters continue to make impressive contributions to Mars science, it's always extra exciting to see them responding to unexpected situations like this one." A European Mars probe ...