Activity for SMuJ‭

Type	On...	Excerpt	Status	Date
Question	—	Can we start a colony on a passing rogue planet? A rocky planet, similar to Earth in mass and composition, is set to pass through the solar system in one year's time. It has frozen oceans of water ice and a thin atmosphere of unknown composition. It's traveling at 50 kilometers per second, almost tangent to Earth's path around the sun. At its close... (more)	—	about 9 years ago