Astronomers have identified a planet composed of molten lava, suggesting the existence of an entirely new category of liquid planet.
The distant world, known as L98-59d, is about 1.6 times the size of Earth and orbits a small red star 35 light years away. Astronomers initially thought the planet might harbour a deep ocean of liquid water, but the latest analysis suggests that it could be fundamentally different to anything seen before.
