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

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

Planet locations include Jewry Wall, Leicester Cathedral, Haymarket Shopping Centre, Phoenix, Curve, and Leicester Museum & Art Gallery. The trail launches with a public community celebration on 30 ...

We know that our Solar System is not the blueprint for all planetary systems out there. There are gas giant planets orbiting closer to their stars than Mercury, and rocky worlds much larger than Earth ...

A newly studied solar system breaks the usual planet pattern, raising fresh questions about how rocky and gas planets form.

Astronomers have found a rocky planet where it should not exist, orbiting far from a cool red star. Could this strange ...

Add Yahoo as a preferred source to see more of our stories on Google. An illustration showing Planet Nine, a hypothetical, undiscovered planet in our solar system. New research now suggests the ...

With this new survey, astronomers have gained a peek inside a stage of exoplanet system formation they have yet to fully ...

This is HOPS-315, a baby star where astronomers have observed evidence for the earliest stages of planet formation. The image was taken with the Atacama Large Millimeter/submillimeter Array (ALMA). In ...