Pair of invisible stars found locked in tight 17-hour orbit
![](https://weirdnews.info/wp-content/uploads/2023/03/Pair-of-invisible-stars-found-locked-in-tight-17-hour-orbit-Cropped-601x220.jpg)
An artist’s impression of a closely orbiting pair of stars. ESO/L. Calçada – By Michael Irving 2023 Mar 01 – Astronomers have discovered a bizarre star system containing two ultra-cool dwarf stars that are so close together they orbit each other in less than …