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By Astronomy Cast on February 11, 2019 in

Fritz Zwicky discovered dark matter, gravitational lensing, supernovae and neutron stars. And he also worked on a few more controversial ideas like, uh, tired light. Let’s learn more about Zwicky.

By Astronomy Cast on July 30, 2018 in

The most powerful telescopes in the Universe are completely natural, and the size of a galaxy cluster. When you use the gravity of a galaxy as a lens, you can peer right back to the edges of the observable Universe.

By AwesomeAstro Pod on April 11, 2017 in

Discussion with @awesomeastropod about van allen radiation, sun as gravitational lens at #365DaysOfAstro

By Jimmy Erickson on October 17, 2009 in

Date: October 17, 2009 Title: The Search for WIMPs Podcaster: Jimmy Erickson Organization: Smart Ass Science Description: Dark Matter makes up one quarter of our Universe, and we still don’t even know what it is. Many scientists are searching for the answer. There are several different teams around the world searching for the particles […]

By Daniel Raffaele on July 4, 2009 in

Date: July 4, 2009 Title: New World Ordered Podcaster: Daniel Raffaele Organization: None Description: Daniel Raffaele talks about exoplanets: the discoveries so far, the potential for new discoveries, and what it is that we are actually looking for. New technologies, such as Infra-Red, allow us to see much smaller planets orbiting closer to their stars, […]

By Jim Stratigos on June 12, 2009 in

Date: June 12, 2009 Title: Does Dark Matter Really Exist? Podcaster: Jim Stratigos Organization: The Atlanta Astronomy Club Description: Is most of the matter in the universe a mysterious and invisible substance known as ‘dark matter’? Observations of the rotational curves of galaxies and certain properties of the cosmic microwave background can not be […]

By Rob Knop on January 21, 2009 in

Date:  January 21, 2009 Title:  Observing Quasars with Nature’s Telescope Podcaster:  Robert Knop Organization: The Meta Institute of Computational Astronomy Description:   Gravity affects the motion of objects– apples fall, planets orbit.  Even light, when passing a massive object, will have its path deflected.  A massive galaxy in front of another more distant massive galaxy can bend […]