
The perfect videogame for people into stargazing
I like to dream about space—the flowering alien plant life light years away from Earth, the planets circling a big burning star rivaling our sun. It’s water on Mars and planets made up of swirling gas that I think about, too. I’ll conjure up in my mind the planets lurking just beyond our solar system’s reach, though some day I won’t have to: in January, planetary scientists Konstantin Batygin and Mike Brown discovered evidence of what they believe is a Neptune-sized planet that orbits our sun every 15,000 years: Planet X. Unlike me, Batygin and Brown are actually searching for new planets—perhaps to make…