The World’s Hottest Engine Is Smaller Than a Cell and Hotter Than the Sun’s Corona

Technically speaking, an engine is a device that converts some form of energy into mechanical energy. Taking that definition ...
Smithsonian Magazine

A NASA Spacecraft Will ‘Touch’ the Sun on Christmas Eve, Flying Closer to the Star Than Any Probe Before

The holiday season is a busy time for humankind’s sun-surfing spacecraft. This Christmas Eve, the Parker Solar Probe will be going where no probe has gone before: a mere 3.8 million miles from the sun ...