Astronomers have uncovered a massive new trans-Neptunian object, 2017 OF201, lurking at the edge of our solar system. With an orbit stretching 25,000 years and a size that may qualify it as a dwarf ...

A new study suggests that a tiny, icy world beyond Pluto harbors a thin, delicate atmosphere. That would make it the solar ...

Growing up in the 1980s meant sitting in classrooms with laminated posters on the wall, a globe in the corner, and a science teacher who spoke with confident authority about how the world worked. The ...

We often use the Earth's 24-hour rhythm to keep track of time, but time changes and bends as we move through space. There are eight planets in the solar system, and they all move in a delicate cosmic ...

The standard story of the origin of our solar system has gone like this: 4.6 billion years ago, a giant cloud of dust hung frozen in space. Then the explosion of a nearby star caused part of that dust ...

An exoplanetary system about 116 light-years from Earth could flip the script on how planets form, according to researchers who discovered it using telescopes from NASA and the European Space Agency, ...

Learn about the Hubble Space Telescope's incredible reach and why a block of lead on Venus would melt like ice on Earth. Join us as we delve into the wonders of our celestial neighborhood, revealing ...

New measurements of radio galaxies reveal that the solar system is racing through the universe at over three times the speed predicted by standard cosmology. Using highly sensitive data from multiple ...

How fast and in which direction is our solar system moving through the universe? This seemingly simple question is one of the key tests of our cosmological understanding. A research team led by ...

Voyager 1, launched in 1977, has traveled farther than any spacecraft in human history. After more than four decades of silent endurance through space, it now sails beyond the orbit of the outer ...