1000 Things You Didn’t Know About the Universe #5: Seeing Aurora Means the Sun Isn’t Killing You

Welcome to a new series of posts that will characterize 1000 amazing facts about the Universe.  There is so much out there that we have yet to learn, and every day, astronomers across the globe are using their research to reveal the deepest secrets of the cosmos.  This series will look at the strangest, coolest, most exciting facts that we have discovered in hundreds of years of modern science. Fact #5:When you see an aurora in the sky, it is a sign that you are being protected by the Earth and not being blasted with solar radiation. The Sun; A...

Where are you? The Moon can tell you!

I was out on a sunny day a few weeks ago waiting for a bus, and as per usual I have my head up in space (I would say up in the clouds but that is too low for me).  I noticed the Moon up in the sky, just past first quarter, and I was thinking about the angle of the illuminated side and how it related to some of the positions of the Earth and Sun in space.  I wondered what information we could gather from the way it looked.  It led me to this ‘illuminating’ post. I realized...