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Scientists who study the universe beyond Earth, from the planets and moons of the solar system to the birth and fate of the universe.


Featured Images

Spiral galaxy UGC 2885, also known as Rubin's Galaxy

Darkness and Beauty November 22, 2023

Otto Struve, 1917

Colorful Director August 13, 2022

Sun from Solar Dynamics Observatory

Changing Sun May 31, 2022

Harlow Shapley (left), Heber Curtis

The Great Debate April 24, 2020

Maria Mitchell, 1851

Pioneering Astronomer August 1, 2018

Radio Programs

Charlotte Moore Sitterley “Computing” a career in astronomy September 25, 2023

Kopernik A monument to a man who changed the universe August 18, 2023

Fritz Zwicky Throwing farther than anyone else February 14, 2023

Dark Matter “Seeing” the invisible universe February 13, 2023

Caroline’s Cluster Discovering a surprising cluster January 14, 2023

Moon and Saturn Discovering a giant dirty snowball December 26, 2022

Glass Art Cosmic artistry on glass December 18, 2022

Gustav Spörer Learning about solar “naps” October 23, 2022

Yerkes Observatory The birthplace of astrophysics October 21, 2022

Johann Bayer Filling out the roster of stars August 25, 2022

Copernicus Seeing a “hidden” universe August 21, 2022

More Otto Struve Gunshots, lightning, and astronomy August 13, 2022

Otto Struve Building on a new opportunity August 12, 2022

Heber Curtis An astronomer expands the universe June 27, 2022

John Bolton Eavesdropping on noisy galaxies June 5, 2022

Charles Greeley Abbot A Sun-watcher ahead of his time May 31, 2022

Bernard Lyot Studying the “extended” Sun February 27, 2022

Johann Bode Counting off the planets January 19, 2022

More Tycho Brahe A larger-than-life astronomer December 15, 2021

Tycho Brahe New star, new career path December 14, 2021

Monuments Monuments to famous astronomers August 27, 2021

Moving West Moving west with a load of space rocks August 26, 2021

Going Steady A “spooky” origin for a theory of the universe June 29, 2021

Pioneering Telescopes More accomplishments for two pioneers June 21, 2021

Nicholas Bobrovnikoff A comet sparks a career in astronomy April 29, 2021

Puppis Clusters A busy season of discoveries April 2, 2021

Christine Kirch Getting paid to make calendars February 28, 2021

Desert Station Sun-watching from the desert December 26, 2020

Escape from Paris Escaping in the name of astronomy December 2, 2020

Murder Mystery An astronomical murder mystery November 15, 2020

Post-War Astronomy Preparing for post-war astronomy September 1, 2020

Witchery A rare problem for a famous astronomer August 7, 2020

Rescue! One scientist rescues another May 16, 2020

Father Hell Taking the measure of the solar system May 15, 2020

The Great Debate Debating the size of the universe April 24, 2020

Lewis Swift From merchant to cosmic celebrity February 28, 2020

Maria Kirch Giving credit where credit was due February 25, 2020

RAS Dreaming of the stars over dinner January 11, 2020

Foucault and Fizeau Two “enlightened” French scientists September 18, 2019

Off to War Charging off to war June 3, 2019

Van Biesbroeck’s Star A feeble stellar discovery October 27, 2018

Martin Ryle A better way to view the universe September 27, 2018

High Climber Climbing toward the Sun September 10, 2018

More Maria Mitchell A pioneering astronomy professor August 1, 2018

Maria Mitchell A comet launches a career July 31, 2018

Probing the Sun Soaring close to the Sun July 30, 2018

Visiting Astronomers Where to see pioneering astronomers July 22, 2018

Selective Viewing Selecting the right targets July 12, 2018

Henrietta Swan Leavitt Expanding the known universe July 4, 2018

George Ellery Hale One man, four giant telescopes June 28, 2018

Pulsars Discovering a “scruffy” star November 27, 2017

Harold Weaver Probing a “mysterious” molecule September 27, 2017

Arthur Compton From cosmic rays to gamma rays September 10, 2017

Last Discovery Picking out a new moon September 9, 2017

The Dolphin A practical joke in the night sky July 15, 2017

Alexis Bouvard Inklings of an eighth planet June 26, 2017

Lynx Looking for a faint cat May 25, 2017

Fornax Firing up a celestial furnace January 19, 2017