April 4 – Researchers at the Dark Energy Spectroscopic Instrument release the largest 3D map of the universe featuring more than six million galaxies. Using this map, researchers are able to measure the acceleration of the expansion rate of the universe with unprecedented accuracy, detecting hints that the rate of expansion has been increasing over time.[4]
November 5 – A Honda HA-420 Hondajet plane crashed through a perimeter fence and hit a car while aborting takeoff at the Falcon Field airport in Mesa. Four of the five people onboard the plane and the driver of the vehicle were killed.[8]
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