NASA astronomer Dr. Michelle Thaller explains how the iron in our blood connects us to one of the most violent acts in the universe — a supernova explosion — and what the universe might look like when the stars die out.
Eleanor Imster has helped write and edit EarthSky since 1995. She was an integral part of the award-winning EarthSky radio series almost since it began until it ended in 2013. Today, as Lead Editor at EarthSky.org, she helps present the science and nature stories and photos you enjoy. She also serves as one of the voices of EarthSky on social media platforms including Facebook, Twitter and G+. She and her husband live in Tennessee and have two grown sons.