Daily Extra :
Astronomy & Space Word of The Day
regolith: The layer of rocky or icy debris and dust made by meteoritic impact that forms the uppermost surface of planets, satellites and asteroids.
Today in History:
1924: Astronomer John Campbell died in Oxford, Oxfordshire, England.
1927: Max Karl Ernst Ludwig Planck retired from the University of Berlin.
1958: First official day of the National Aeronautics and Space Administration (NASA). Existing NACA facilities, personnel, policies, and advisory committees were transferred to NASA, and the NACA laboratories were renamed Research Centers.
