Chandra
![Chandra Chandra](https://nasa3d.arc.nasa.gov/shared_assets/models/jpl-chandra/chandra_thumb_428x321.png)
Launched on July 23, 1999, it is the largest and most sophisticated X-ray observatory to date.NASA's Chandra X-ray Observatory is a telescope specially designed to detect X-ray emission from very hot regions of the Universe such as exploded stars, clusters of galaxies, and matter around black holes.