New telescopes might bring scientists closer to detecting dark matter. They could soon reveal signals that finally let us understand this mysterious substance.
New analysis of data from the Webb space telescope shows that Comet 3I/ATLAS has methane. This shows its origin is different from comets in our solar system.
Airglow is a light that occurs high in Earth's atmosphere. It's usually too dim to see with the eye, but photographers can capture glorious photographs of it.
The Venus-Jupiter conjunction for 2026 is here! Enjoy these stunning photos from around the world as the sky’s brightest planets have been drawing closer.