Behold, the world’s fastest microscope: it works at such an astounding speed that it’s the first-ever device capable of capturing a clear image of moving electrons. Developed by researchers at the University of Arizona, who have published their work in the journal Science, the microscope uses electron pulses at the speed of a single attosecond – or one quintillionth of a second – to snap “freeze frames” of the subatomic particles, which travel fast enough to circle the Earth in a matter of seconds.