Large telescopes are custom-built and rare. There is no standard practice or model. Every time a large telescope is built, its designers must re-think the challenges, check every application, and ...

The double star system is called HD 135344 AB and it's about 440 light-years away from Earth. A and B are both young stars, ...

Armed with the world's largest digital camera, the Vera C. Rubin Observatory in Chile will take night-sky images that revolutionize astronomy.

Tony Tyson’s cameras revealed the universe’s dark contents. Now, with the Rubin Observatory’s 3.2-billion-pixel camera, he’s ...

Imagine a space telescope with a mirror stretching 50 meters across! That's larger than the width of a U.K. soccer field and ...

The European Southern Observatory's Very Large Telescope (ESO-VLT) has captured clear images of 3I/ATLAS, a fast-moving interstellar comet that the Sun's gravity can't slow down.

Captured just days after its discovery, the images offer the clearest view yet of this rare visitor from beyond our solar system.

New observations show a star that blew up in two separate bursts, confirming a long-suspected cosmic phenomenon called a ...