... Search By Name Enter coordinates Use current location . ... Mars . ... Caltech researchers take the temperature of Mars' past . ... By analyzing carbonate minerals in a 4-billion-year-old meteorite that originated near the surface of Mars, the scientists determined that the minerals formed at about 64ТА Fahrenheit (18ТА Celsius). т??The thing thatт??s really cool is that 18ТА is not particularly cold nor particularly hot,т?? said Woody Fischer from Caltech. т??Itт??s kind of a remarkable result.т?? ...