"It's as if we saw a cat sitting next to a bird cage," Yale University professor Debra Fischer (who's not involved with the study) said. "If there are yellow feathers sticking out of the cat's mouth, it's a good bet that the cat swallowed a canary." The team saw enough lithium and rocky planet material on HIP68468 to form six Earths. That said, the scientists believe it still has at least a couple of planets left: one is a supersized Neptune, while the other is a super-Earth.

Since the star is very similar to our own, this discovery shows us how solar systems like ours could evolve over time. Before you panic, take note that we're not getting sucked into an enormous ball of fire anytime soon. Based on the team's computer simulations, it will take billions of years of gravitational tugs and pulls before our sun starts gobbling up its planets. Besides, Mercury and Venus are bound to go first.