The ringless Mars we see today is probably an anomaly. We’re in between rings right now, and we’ve assumed that’s normal.
Astronomers detected a giant planet orbiting a small star. The red dwarf GJ 3512 is located 30 light-years from us. The planet has much more mass than theoretical models predict.
Astronomers observe up to three newborn planets evolving from a disk of gas and dust particles circling a distant Sun-like star.
