Public Welfare Medal-winning astrophysicist and academic Neil deGrasse Tyson hosted shows such as NOVA ScienceNow, Cosmos: A Spacetime Odyssey, and Star Talk. He is the director of Hayden Planetarium and contributed to the dismissal of Pluto’s status as the ninth planet. He has also written a monthly column as "Merlin.”
When the American government, baffled by unexplained sightings of flying objects, assigned J. Allen Hynek the task of solving the mystery, Hynek was sceptical. However, he later became the first person to scientifically analyze such sightings. He also established the "Close Encounter" classification system to study UFOs.
American-Canadian theoretical physicist Lawrence M. Krauss has taught at institutes such as ASU and Yale and also penned several bestselling books. Known for his research on dark energy and zero-energy states, he was later accused of sexual misconduct and thus lost the directorship of the ASU’s Origins Project.
Astronomer Amy Mainzer has been associated with NASA's NEOWISE mission and specializes in asteroid detection. The Stanford and Caltech alumna now teaches at the Lunar and Planetary Laboratory of the University of Arizona and has also appeared on the History Channel series The Universe and in several documentaries.
The first British astronaut to perform a space-walk, Michael Foale was also the only NASA astronaut to be on missions aboard both the Mir and the International Space Station. Born to a Royal Air Force pilot father, he was well-traveled. He was the only survivor of a car accident in Yugoslavia.
Nobel Prize-winning astrophysicist Saul Perlmutter has been associated with the Lawrence Berkeley National Laboratory and teaches at the University of California, Berkeley. Born to a chemical engineering professor, Perlmutter grew up to co-discover the accelerating expansion of the Universe and later introduced innovative Berkeley courses such as Physics & Music.
Nobel Prize-winning physicist Robert Hofstadter is remembered for his path-breaking research on the structures of the particles of the atomic nuclei, such as protons and neutrons. The Princeton alumnus initially worked with the National Bureau of Standards, where he developed the proximity fuse, and then taught at Princeton and Stanford.
Adam Guy Riess is an American astrophysicist, known for his work on Type Ia supernovae. Teaming up with Saul Perlmutter and Brian Schmidt, he started working on the supernovae, using it as cosmological probe, eventually discovering that the expansion rate of the universe is accelerating. He received the 2011 Nobel Prize in Physics for his work.
Lyman Spitzer was an American theoretical physicist, mountaineer, and astronomer. He was known for his research into star formation and plasma physics. He is credited with the invention of the stellarator plasma device and he was the one who first conceived the idea of telescopes operating in outer space. He was a founding member of the World Cultural Council.
American astronomer and Princeton University physicist Robert H. Dicke is best known for making significant contributions in the fields of atomic physics, astrophysics, gravity and cosmology. He designed and introduced the Dicke radiometer, the most common form of microwave radiometer; developed the Brans–Dicke theory of gravitation with Carl H. Brans; and is generally believed to have invented the lock-in amplifier.
Renowned astrophysicist Alexei Filippenko, who teaches at the University of California, Berkeley, is primarily focused on supernovae and galaxies. Apart from writing 900 research papers, he has also penned a bestselling book and appeared on programs such as The Universe. He loves tennis and often travels to view solar eclipses.
James Edward Keeler initially worked at the Lick Observatory and later proved that the rings of Saturn aren’t solid but are made of tiny particles. He used the reflecting telescope for his astrophotography projects. He had also been the director of the Allegheny Observatory and had co-founded Astrophysical Journal.
Mostly known for his life-long association with the University of Chicago’s Yerkes Observatory, astronomer William Wilson Morgan was the first to prove that the Milky Way has spiral arms. Apart from co-developing the MK system of classification of stars, he also co-established the Bautz-Morgan classification system for clusters.