MIT astrophysicists and their colleagues are excited about the latest milestone toward developing a giant telescope that among other things will allow direct observations of planets orbiting stars in solar systems beyond ours.
On Dec. 13 the Carnegie Observatories of the Carnegie Institution signed an agreement with the University of Arizona's Steward Observatory Mirror Lab to produce the first mirror for the Giant Magellan Telescope (GMT). The telescope will have a diameter of about 25.4 meters or 83 feet--making it about as wide as an eight-story building is tall.