molten

But it could equally be explained by an ocean of molten rock, which would preclude life, according to Prof Oliver Shorttle of Cambridge University.

Scunthorpe's furnaces produce molten iron by splitting rocks containing iron ore in a chemical reaction that requires intense heat.

Clumps of tiny, molten pellets, known as "nurdles", are being washed up on its beaches, including in Skegness.

The other ignition happened, the investigators said, when two wires slapped together, releasing molten metal into the vegetation.

The problem is that such technology works by forming bubbles of oxygen on the surface of electrodes deep within the molten regolith itself.