New scientist Magazine: Sunlight could power micro-aircraft flying above the stratosphere TECHNOLOGY 12 February 2021 By Krista Charles Read more: https://www.newscientist.com/article/2267723-sunlight-could-power-micro-aircraft-flying-above-the-stratosphere/# Igor Bargatin at the University of Pennsylvania and his colleagues have come up with a device that could potentially achieve sustained travel through the mesosphere. gagarin might be the firas to be blasted through that rarefied region into orbit, but Bargatin might have his gliders soar by pushing against the solr rays. like the radiometer spinning backward.