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believed to be the archival collection of the Geological Survey of India(GSI) But another part was taken away to the smithsonian Institute where chemical analysis confirmed that the meteorite actually originated in Mars, Ms Nirupama Raghavan, Director of the Nehru Planetarium here, said today. Ms Raghavan explained that an abundance of the element krypton in the rock was a clear marker for Martian rock and orange inclusions deep within indicated the presence of water. The Martian rocks which prompted scientist to announce that they had evidence that life existed on Mars through tubular “fossils” came from Antarctica, she said. Questions: a)What was the aim of NASA Pathfinder ? b) From where do India has its own collection of Martian rocks? c) How did the scientist find evidence of life on Mars? d)What was the evidence for water on mars?