OF201, the object belongs to the same all-star family as Pluto: dwarf planets. Its diameter, roughly 435 miles (700 km), is ...

It’s kind of a freak accident that it actually happened,” said David Nesvorny with the Southwest Research Institute.

Pluto’s bizarre orbit and rotation are unexplained. The traditional classroom solar system model of a light bulb as the sun and planets on wires extending from it represents a flat orbital plane ...

Given just how big space is, the solar system seems like it shouldn't be too mysterious. But there are actually plenty of ...

Billions of years from now, the Sun will swell into a red giant, swallowing Mercury, Venus, and Earth. But that’s not the ...

This new modular home is the seventh house I will be showing from the Louisville Manufactured Housing Show!

The distance of 2017 OF201 from the Sun at its closest point is 45 AU, almost the same as that of Pluto ... model. The researchers suggest that the gravitational pull of Planet 9 — if it exists — will ...

The deviant behavior of a subatomic particle might point to undiscovered forms of matter and energy in the universe. Or it ...

Brown’s discoveries included three objects that each were at least half as wide as Pluto ... now called the Nice model, which posits that the solar system began with many more small bodies ...

Researchers are trying to rebuild sea ice above the Arctic Circle so it can reflect the sun’s warming rays, slowing climate change ...

This week, tensions continue to rise in American cities like Los Angeles following the deployment of National Guard troops in response to U.S. immigration protests.

A composite image comparing the relative sizes of our solar system's known dwarf planets ... a similar distance as its fellow dwarf planet Pluto. Based on the newfound object's trajectory ...