The origination of the moon's two 'Grand Canyons' have baffled scientists for years because of the absence of liquid on the lunar planet – but now experts think they've worked it out ...

A new study suggests the craters were dug out by rocky debris after the lunar surface was struck around 3.8 billion years ago ...

Researches have determined that ejecta from an ancient asteroid. strike carved out the grand canyons (Vallis Schrödinger and ...