Hubble Space Telescope Hubble was one of the first major telescopes placed in orbit, capturing visible, ultraviolet, and near-infrared light.
Kepler Space Telescope Kepler focused on finding Earth-like exoplanets in the habitable zones of their stars. It observed 150,000 stars
Event Horizon Telescope It uses very-long-baseline interferometry (VLBI) to observe black holes directly.
European Extremely Large Telescope The E-ELT will be the world’s largest optical/near-infrared telescope, with a 39-meter primary mirror.