New simulations suggest that up to four of the solar system's rocky planets, including Earth and a long-lost world, once ...

From meteor showers to visible nebulas, August is primed to be an action-packed month for stargazers in the United States. ...

New discoveries of objects in the Kuiper Belt have also presented challenges for the Planet Nine theory. The latest is known ...

A study has suggested that this motion of our star through the galaxy potentially takes us through regions of space that could affect our planet's climate. According to the study, the Solar System may ...

International astronomers have for the first time witnessed the birth of a planetary system beyond Earth's sun that could one day resemble our own.

Jupiter is the largest planet in the solar system. It's about 11 times wider than Earth, with an equatorial diameter of 88,846 miles (about 142,984 kilometres).

The find is similar to another solar system called Trappist-1, which contains seven Earth-sized rocky planets locked in various orbital resonances. What makes the new system different is that the ...

Osiris, a gas giant about 150 light-years from Earth, orbits a yellow star similar to our sun. It is the only planet outside our solar system known to have an atmosphere.

Astronomers have captured the earliest stages of planet formation around a young sun-like star, offering a rare glimpse into ...