Not too far away, four worlds are orbiting a young, bright star—and now, after staring at the alien stellar system for seven years, we can watch as the planets quietly trace their cosmic loops.
There’s something indescribably majestic about watching these whirling worlds, each obeying the same laws of planetary motion that Johannes Kepler derived four centuries ago. After all, though we can see moons orbiting our planetary neighbors, it’s improbable that we’ll ever observe our own solar system perform this dance from afar.
The blotted-out star in the center of the video is called HR 8799, and it’s in the constellation Pegasus, about 129 light-years from Earth. About five times brighter than the sun, HR 8799 is just 30 million years old, the equivalent of a stellar newborn. Source: Watch Alien Worlds Whirl Around a Distant Star