The Northern Lights loom behind rocks on the coast of Ireland in February 2023. A coronal mass ejection from the Sun allowed aurorae to be seen farther south than normal.
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.
