If the object really is Planet Nine, it would be larger than Neptune and exist 700 times further from the sun than Earth.

Astronomers have detected a promising sign of a ninth planet lurking at the the farthest reaches of the Solar System.

On Friday, May 2 the asteroid Vesta will reach opposition, marking the ideal period to spot the second largest asteroid ...

Astronomers using the James Webb Space Telescope have directly detected the faint glow of a planet that’s colder than any ...

In 2020, astronomers detected WD 1856+534 b, a gas giant that orbits a star 81 light-years from Earth. This exoplanet, which ...

"It's like trying to spot a fish by looking for ripples in a pond, rather than trying to see the fish itself." ...

For decades, scientists believed Vesta, one of the largest objects in our solar system's asteroid belt, wasn't just an asteroid and eventually concluded it was more like a planet with a crust, mantle ...

Jupiter is our solar system’s largest planet. The two brown dwarfs are gravitationally ... The planet, named 2M1510 (AB) b, orbits around this pair. Another brown dwarf is present in this system, but ...

Robert Lee Hotz covered new research and its impact on society for The Wall Street Journal.

On April 24, 1990, the Space Shuttle Discovery blasted off from Kennedy Space Center, carrying the new Hubble Space Telescope ...