Cosmic rays are streams of tiny particles that race around our galaxy and impact the atmosphere of our planet. Protons make up the majority of them, although
Astronomers have long sought the launch sites for some of the highest-energy protons in our galaxy. Now a study using 12 years of data from NASA’s Fermi Gamma-r
Before I tell you about the high-altitude NASA aircraft we use and the lunar observatory we are building, let’s talk about the earliest standard for measuring light output: the humble candle.