The world’s largest telescope is edging closer to completion

This week, the University of Arizona’s Steward Observatory Mirror Lab began work on the sixth of seven primary mirror segments for the Giant Magellan Telescope (GMT). On March 1st, the lab started heating its one-of-a-kind glass furnace to a temperature of 1,165 degrees Celsius. via Technology and News Today https://www.engadget.com/gmt-mirror-spin-casting-201237230.html

Modified Cessna is the ‘largest’ electric aircraft to take flight

Modified Cessna is the ‘largest’ electric aircraft to take flight
Electric aircraft are ever so slightly closer to becoming a practical reality for travel. Magnix and AeroTEC have flown what they say is the world’s largest all-electric aircraft.
Continue reading … https://ift.tt/3cjlwcm