One of the biggest questions in astronomy is why the rate of expansion of our universe over time is increasing. It has led to speculation that a major component of the universe is something called “dark energy.” In this week’s Ask an Expert on Facebook Live, space history curator David DeVorkin will discuss this question, dark energy, and the Big Throughput Camera on the Blanco telescope that is helping astronomers refine their knowledge of the universe.
Tune in live on our Facebook page.
