A low-density, puffy planet orbiting relatively far from a young star in a nearly perpendicular orbit. What's going on?

A mysterious "rogue" planet has been observed gobbling six billion tons of gas and dust a second—an unprecedented rate that ...

Astronomers have discovered an alien world that defies every planetary rule with its massive size, low density, and tilted ...

Astronomers are investigating a strange class of exoplanets known as eccentric warm Jupiters — massive gas giants that orbit their stars in unexpected, elongated paths. Unlike their close-orbiting ...

(Handout/EUROPEAN SOUTHERN OBSERVATORY/AFP) A mysterious "rogue" planet has been observed gobbling six billion tonnes of gas and dust a second -- an unprecedented rate that blurs the line between ...