Even though I hardly placed a piece all weekend, there’s been some progress. The bottom edge is almost done, and the top edge is mostly done. I’ve done most of the spacecraft, satellites and other man-made stuff. I also placed the completed bits more or less where they belong.

The first planet is also almost done:

I picked Uranus because the cyan pieces were the easiest to pick out. The colour comes from methane in the atmosphere of the planet. As you can see, this is not one of the warmer planets, and it takes Uranus 84 Earth years to orbit the sun. Its axis is tilted so that it points almost directly at the sun. More info on Uranus. Uranus has 27 moons (as you can see), but only some of the most well known are pictured in the puzzle. The names are finished, but the small dots representing the moons are still missing.
Most planets, except Earth, are named after Roman gods, but Uranus is just a Latinized form of the Greek god Ouranos (the Roman equivalent would be Caelus), the sky god. He was the grandfather of Zeus/Jupiter.
As for the moons, according to Wikipedia, most of the moons of Uranus are named after characters from Shakespeare or Alexander Pope.
I am having so much fun with this one, and I enjoy reading about all the celestial bodies.
Also, WordPress just reminded me that’s it’s the third birthday for this blog. I’m sort of impressed that I’ve managed to keep it up for so long, it’s not really like me at all 🙂