"We do not have any samples from Jupiter, in contrast to other bodies like the Earth, Mars, the moon and asteroids," Kruijer said. "In our study, we use isotope signatures of meteorites (which are derived from asteroids) to infer Jupiter's age." ...
Jupiter's moon, Ganymede, captured by the Juno probe just a few weeks ahead of the 10th anniversary of its launch.Credit: NASA/JPL-Caltech/SwRI/ASI/INAF/JIRAM Ganymede isn'tjusta cosmic celeb for being Jupiter's largest moon. It's also the largest moon in our entire solar system, mea...