It was in the year 1916 that a man named Karl Schwarzschild began to prove the existence of black holes based on the research of scientists like Albert Einstein, among others. But who exactly is Karl Schwarzschild, anyway, and how did he come to discover the existence of black holes?
Tonight, I’m thinking about time. The amount of time that we spend on this earth – aware of ourselves and our surroundings – seems extremely short when you compare our lifespan to the age of our universe. Some estimate the age of our universe to be around 13.7 billion years. There seems to be a disconnect. How could the universe be so old and our lifespan so short? Why can’t we all live longer – to enjoy our family and friends for hundreds if not thousands of years? It’s not like the universe is going to end quickly so that our lives have to end quickly as well, right?
Instead of merely being a place to set foot on, is it possible that the moon can be a useful mineral resource for us? What exactly is the moon made out of, anyway?
I don’t know about you, but until recently, I’ve never really thought about the shape of a comet. I’m not talking about the overall shape, with the bright coma and long, beautiful tail. No, I’m talking about the nucleus – the center or core of a comet.
I thought it would be fun to take a closer look at one of the planets in our Solar System – so here are 10 random facts about Uranus.