Current estimates place the size of the Universe at 93 billion light years across, but Penny believes Kepler observations of a small selection of Cepheids may change this value by a few percent.
Oh dear, almost a wasted afternoon.
Some astronomers believe that the Universe is infinite, going on in all directions forever. Others have estimated that the Universe has expanded to the point that it’s about 150 billion light years across since the Big Bang; and it’s getting bigger every day.
Apparently we can’t turn the volume down on this thing either.
Let’s see, if two cars are approaching each other at 55 miles an hour and they collide, how much will their owners insurance rate increase …