When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Scientists have mapped the motions of stars within the Milky Way's companion galaxy, the ...

All the stars you can see in the sky are moving, orbiting the center of the Milky Way galaxy, but they are so far away that motion is undetectable without telescopes. Even then, you usually have ...

Thanks to this relatively quick motion, the astronomers have completely mapped the orbit of this star, known as S0-102, making it the second such star observed. Knowledge of complete orbits helps ...