Sallie Baliunas, Ph.D. is astrophysicist and senior scientist at the George C. Marshall Institute, an astrophysicist at the Harvard-Smithsonian Center for Astrophysics in the Solar, Stellar, and ...

Dr. Jonathan McDowell, of Harvard-Smithsonian Center for Astrophysics, has been recording Starlink satellites. Before this launch, McDowell recorded the following: ...

Dr. Jonathan McDowell, of Harvard-Smithsonian Center for Astrophysics, has been tracking Starlink satellites. Before this launch, McDowell recorded the following: 7,227 are in orbit ...

The Smithsonian will celebrate the nation’s successes, contemplate the consequences of our history, commemorate the sacrifices of those who have worked to uphold the nation’s ideals, and ask Americans ...

An entire generation came of age with the indescribable awe of landing on the Moon — and the ensuing Golden Age of Space has changed our world forever for the better. More than 50 years later, what is ...