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The Total Solar Eclipse of 2017 that crossed the United States garnered international attention. Here in Canada we were treated to a beautiful partial solar eclipse, and the Canada Aviation and Space Museum attracted thousands of visitors to watch. Here NASA has published some of the ways the eclipse was watched, from the ground and from space. My favourite is the above picture because it has the Sun, which is 150 million kilometres away, the Moon, which is 400,000 kilometres away, and the

The Boomerang Nebula is the coldest location in the known universe: it measures at roughly 2 degrees colder than empty space! This nebula is the result of the death of a red giant star, and the extreme temperature is caused by the rapid expansion of the nebula. According to thermodynamics, if you expand a gas you, cool a gas (just try using one of those compressed air cans for cleaning electronics). However, according to astronomers, a single star's death could not account for a strong enough