The most violent single event in the universe is the death of a massive star, a supernova. We have seen several different types, though the common element is a massive explosion, taking a star hiding amongst the background into an eruption that outshines it’s entire host galaxy. We have seen the brightness grow and fade over the duration of a supernova event, but we have never seen one just as it’s starting. Until now. Would you ever have thought that the Kepler space telescope, a planet hunter that continuously observes stars, could see supernovae? The key is in the words ‘continuously observed.’ By keeping...
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 #4: Most of the stars in the universe are red dwarfs smaller than our Sun. There is a leap of understanding that happens when a child learns that our Sun...
When I do Planetarium shows, one of the things I like to talk about during the Milky Way – Andromeda collision that will happen in 70 Mlllion years, is the fact that very few stars will actually hit each other. Yet we still call it a ‘Galaxy collision.’ One of the questions I always get is “Will the Earth survive this?” I usually ask the audience. The response is usually a unanimous ‘No way!” And then I tell them how big Galaxies are and they can’t believe how unlikely it is that the solar system will be affected. Consider the...
