Interstellar 'comet' Oumuama is just a crusty old rock

It's not an alien spacecraft! Cigar-shaped object that
hurtled past Earth, causing many to believe it was a
sign of extraterrestrials, is just a crusty old rock,
scientists reveal.Earlier this month, a skyscraper-sized space rock floated into our solar system, sparking claims that it was a spacecraft sent by extraterrestrials.But a new study has cast doubt on this theory, and instead suggests that the object, called Oumuamua, was merely a crusty old rock.Scientists have analysed the composition of the rock, and suggest that it is coated in a special crust that allows it to withstand temperatures of more than 300°C without being vaporised.