For example, Jupiter is the most massive planet in our solar system. It’s so big, it could swallow 1,000 Earths. So it requires a very high escape speed: 133,100 mph (about 214,000 kilometers per hour ...

Having ended, let’s return to the start. I started this blog—Not Exactly Rocket Science—in August 2006, on little more than a whim. It was my first proper foray into science writing.