Stargazers will be treated to a rare seven-planet alignment in February. This is what scientists hope to learn.

A planet-size object that possibly once visited the solar system may have permanently changed our cosmic neighborhood by warping the orbits of the four outer planets, a new study suggests. The ...

The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

The building blocks of life could have been delivered to Ceres by one or more space rocks from the outer asteroid belt.

Scientists found an intriguing world in our galaxy.

Retrogrades are often misunderstood as chaotic but are actually opportunities for reflection and growth. Each type of ...

When we first began searching for planets around other stars, one of the surprising discoveries was that there are planets orbiting white dwarfs. The first exoplanets we ever discovered were white ...

The organic material found in a few areas on the surface of dwarf planet Ceres is probably of exogenic origin. Impacting ...

As Huang noted in an NRAO press release: "We expected the high levels of radiation in this cluster to inhibit planet formation in the outer regions of these disks. But instead, we're seeing signs ...

A planet-size object that possibly once visited the solar system may have permanently changed our cosmic neighborhood by warping the orbits of the four outer planets, a new study suggests.