James Webb Telescope captures timelapse of the supernova remnant Cassiopeia A This timelapse video using data from NASA’s James Webb Space Telescope highlights the evolution of one light echo in the ...

Go outside right now. What’s the farthest thing you can see? A tree? A bird? What about the Moon? It’s 250,000 miles away. The Sun is 400 times farther than that, at nearly 100 million miles (but ...

Astronomers using the Subaru Telescope in Hawaiʻi have discovered a massive planet and a brown dwarf orbiting distant stars.

Originally, the telescope was an optical instrument much like a spyglass, using lenses, mirrors, or some combination of the two. Today, the term "telescope" describes a wide range of instruments using ...