Astronomers have puzzled for years over a strange pattern in the outer solar system. A surprising number of icy bodies far beyond Neptune resemble snowmen, made of two rounded lobes stuck together.

Astronomers have long debated why so many icy objects in the outer solar system look like snowmen. Michigan State University ...

The first clue came from NASA’s Transiting Exoplanet Survey Satellite, TESS, launched in 2018 to watch large areas of sky for tiny, repeating dips in starlight. Each dip marks a transit and reveals an ...

The discovery overturns traditional models that predicted gas giants in outer orbits and suggests planets can form in gas-poor environments.

Scientists have identified a rocky outer planet in a system where a gas giant was expected. The discovery challenges ...

A team of astronomers has identified a four-planet system orbiting the red dwarf star LHS 1903 that defies conventional ...

Astronomers have found a compact solar system whose planets line up in a way that, according to current models, should not be possible. Around the small star LHS 1903, a dense rocky world orbits on ...

Typically, from what astronomers have gathered thus far, star systems follow a tidy logic: small, rocky worlds huddle close to the warmth of their star, while massive gas giants bloat up in the colder ...

A planetary system 116 light-years from Earth has a peculiar pattern. It could flip the script on how planets form, scientists say.

Astronomers have found a distant world that challenges planetary formation theory, with a rocky planet where gas giants should be.

Analysis of asteroid Bennu samples suggests life's building blocks formed in frozen outer Solar System, not warm asteroid interiors.

An out-of-this-world encounter has touched down at the Discovery Cube Orange County. The children’s learning museum in Santa Ana opened its new Solar System Encounter on Saturday, an immersive look at ...