Astronomers found a pulsar hurtling through space at nearly 2.5 million miles an hour — so fast it could travel the distance between Earth and the Moon in just 6 minutes. The discovery was made using the NASA Fermi Gamma-ray Space Telescope and the National Science Foundation (NSF) and National Radio Astronomy Observatory (NRAO) Karl G. Jansky Very Large Array. Read more: https://go.nasa.gov/2TRyee5 Pulsars are superdense, rapidly spinning neutron stars left behind when a massive star explodes.