Source: BBC Science and Environment
A doomed "lava world" with a similar mass and density to that of Earth has been discovered orbiting a star 400 light-years away.
Observations suggest the planet, named Kepler 78b, is composed mostly of rock and iron, much like our own planet.
But its extremely close proximity to its host star - a
hundredth of the distance between the Earth and the Sun - remains
something of a puzzle.
Details of the work by two teams of researchers appear in Nature journal.