A rock about the size of a fist, found lying in the Sahara, may be a surviving shard of a lost world nearly as large as the Moon. According to a new study, it formed beside the young Sun out of ingredients different from those that built Earth and Mars, and iβ¦
A rock about the size of a fist, found lying in the Sahara, may be a surviving shard of a lost world nearly as large as the Moon. According to a new study, it formed beside the young Sun out of ingre⦠[+5342 chars]