Powdered bones are keeping Solar Orbiter cool thanks to an Irish startup

When the European Space Agency (ESA) designed a spacecraft to fly closer to the sun than any other probe in history, it faced a major problem: how to shield the probe from extreme heat and radiation.When the European Space Agency (ESA) designed a spacecraft to fly closer to the sun than any other probe in history, it faced a major problem: how to shield the probe from extreme heat and radiation.