Five MIT alumni were named in Physics World’s top 10 breakthroughs of 2018. Breakthrough inventions include: 1. A radio telescope that detects colder-than-expected hydrogen gas that existed just 180 million years after the Big Bang. 2. A low-cost method for implementing intensity-modulated radiotherapy (IMRT), a high-precision form of radiation therapy for cancer 3. A propeller-free plane that is powered by charged ions, which had its first test flight last year Learn more about these inventions and the alumni behind them at link in bio. . . . . . . . #electricplane #radiation #inventions #physics #aviation #telescope #astronomy #BigBang #MIT #MITinventions