Opportunities to see Mercury are rare. Right now, it is reaching its greatest elongation and is in an optimal position for viewing shortly after sunset.
February 2020 presents a good evening showing of Mercury for the Northern Hemisphere. This world will appear over the sunset point on the horizon as dusk gives way to nightfall for the next few weeks.
Japan’s Hayabusa2 probe is currently in orbit around the asteroid Ryugu. It has successfully deployed two rovers, MINERVA-II1a and MINERVA-II1b, designed to literally hop around on the surface of the asteroid. The pics sent back so far are rather trippy. In particular, check out the video of the sun moving across the asteroid’s sky.
“But why go to all this trouble?”
Didn’t Mallory already answer questions like this back in 1923?
Here’s an article on the formation of the Solar System and why Mars is smaller than expected.
It’s interesting that Mars is small. It’s interesting to think about the formation of the Solar System. But what I find particularly compelling is the description of three distinct hypotheses, each just as likely to be correct as the others.