Deep in the older, denser reaches of the Milky Way, there is a red dwarf star that shouldn’t exist — or at least, its family ...

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

Since the 1990s, scientists have discovered approximately 6,100 planets outside our solar system, called exoplanets.

Astronomers have uncovered a distant planetary system that flips a long-standing rule of planet formation on its head. Around the small red dwarf star LHS 1903, scientists expected to find rocky ...

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

Is it a two-for-sun deal. Astronomers were blown away after discovering a bizarre exoplanet that orbits twin stars closer than any ever seen before in a binary star system, per a starry study ...

Add Yahoo as a preferred source to see more of our stories on Google. The unexpected detection of a new planet has been hailed as a “remarkable discovery” by Irish astronomers who were involved in its ...

Astronomers have discovered a brand-new type of planet outside our solar system that, even in its infancy, is already bigger than Jupiter. What's more, the find represents the first clear detection of ...

Thirty years ago this week, two Swiss astronomers announced that they had spotted the first known planet orbiting a Sun-like star. The Nobel-winning discovery, later published in the pages of Nature, ...