As more satellite megaconstellations continue to be launched, researchers are exploring the odds people could be struck by falling debris from reentering spacecraft.
Somewhere around the year 774 CE, the Sun erupted with extraordinary violence. High energy particles slammed into Earth’s atmosphere, triggering nuclear reactions that produced radioactive carbon-14. Trees across the planet absorbed this carbon and locked it into their wood, preserving a record of that ancient solar storm that scientists can still read today.
