Building the ultimate Solar System part 2: choosing the right planets

We are building the ultimate Solar System.    In Part 1 we chose the right star. Today’s job: choosing the right planets to put in our ultimate Solar System.  Let’s stick to two defining characteristics: a planet’s size (or mass) and its composition. We want Goldilocks-ish planets.  They shouldn’t be too small, too big, too … More Building the ultimate Solar System part 2: choosing the right planets

Building the ultimate Solar System part 1: choosing the right star

We are building the ultimate Solar System.  Here is an introduction to the game.    What kind of star will anchor our ultimate Solar System? It comes down to two choices: stars like the Sun or cooler, redder stars sometimes called “cool stars” or “red dwarfs”. Why not stars bigger than the Sun?  Because they … More Building the ultimate Solar System part 1: choosing the right star