Members of the science community are invited to download a PDF of the NASA Science Mission Directorate's newest version of its science plan for the next five years.

Each month this series from the AAS Historical Astronomy Division highlights an important discovery or memorable event. In this installment we focus on one of the strangest solar eclipse expeditions in history.

Each month this series from the AAS Historical Astronomy Division highlights an important discovery or memorable event. In this installment we reflect on Arthur Eddington's role in the 1919 solar eclipse that made Albert...