We can’t see it because it’s very tiny particles but we’re inhaling it all the time, and swallowing it. It could have inactive viruses that come alive when they hit the environment. We might be exposed to viruses from light years away. Maybe we’re immune anyway because they’ve been falling on humanity for countless generations. But something else invisible could rain down from the stars that would change things so fast our heads will spin. It’s impossible to predict. How can we prepare? We can’t.
palette knife painting, oil paint on pastel paper