The spiral galaxy NGC 3521 looms serenely in this image, captured with two telescopes over a total exposure time of 19 hours. The image was taken from the El Sauce Observatory in Chile.
The shockwatch of 1927 walked so Apple Watch could run.
The findings suggest our solar system is much more dynamic than previously thought.
Though they orbit the same planet, Uranus' outer rings have two very different origin stories.
Where do massive planets end and stars begin? It may come down to how they formed.
The pristine star formed outside the Milky Way and later drifted into our galaxy.
The collision likely resembles the one that formed the Moon around 4.5 billion years ago.
