An object up to dozens of times the mass of Jupiter flying through our solar system may have disrupted planetary orbits.
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.
