We've learned a tremendous amount about Mars because samples from the Red Planet have already been delivered to Earth: meteorites. Scientists have studied the composition of Martian meteorites and tracked down the specific craters on Mars where many of them came from. It's believed that Mars has been struck hard enough to produce meteorites about ten times in recent history. Some of these craters have yet to be matched with meteorites, but the rocks could be out there.

As we approach the peak of Solar Cycle 25, we can expect more and more activity on the Sun. And on October 3rd, the Sun released its most powerful Earth-directed flare of the current cycle, registering as an X9.0. Of course, this means an increase in aurora activity here on the planet, with visibility at lower latitudes. So, if you're hoping to see auroras this cycle, the next couple of days could be your best chance. Good luck!