Imagine 3 stars orbiting each other every 4 weeks. It's real.

Scientists have found a trio of stars dancing a high-speed cosmic do-si-do. 

In fact, the stars' tempo is so rapid, astronomers have labeled this a new record: Here, a pair of stars orbit each other in less than two Earth days, while a third makes a trip around them in 25 days. Before this discovery, the fastest known three-star grouping was Lambda Tauri, with its farthest star circling in 33 days.

It took 68 years to beat the record holder. A NASA satellite, MIT researchers, artificial intelligence...