Our galaxy’s cross-section—the Milky Way—is visible in this arresting image taken from White Desert National Park in Egypt.
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.
The Milky Way over White Desert National Park in Egypt. Photo: Burak Esenbey 
