A few NASA-funded astronomer teams are always on the hunt for potentially hazardous near-Earth objects, asteroids and comets whose orbits periodically bring them within 30 million miles of Earth’s orbit.
NASA is not only hunting asteroids, it’s also working on ways to defend our planet against them
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.