Ep. 682: Ultra-Diffuse Galaxies & Dark Matter
Astronomy Cast22 Mai 2023

Ep. 682: Ultra-Diffuse Galaxies & Dark Matter

Astronomy Cast Ep. 682: Ultra-Diffuse Galaxies & Dark Matter by Fraser Cain & Dr. Pamela Ga Streamed live on May 15, 2023. Astronomers first noticed the strange behaviors of rotating galaxies almost 100 years ago, suggesting there's an invisible dark matter hold them together with gravity. Or maybe we just don't understand how gravity works at the largest scales. Observations are much better now, and astronomers have found examples of galaxies that are almost entirely made of dark matter. Does this tell us anything? This video was made possible by the following Patreon members: Burry Gowen Stephen Veit Jordan Young Venkatesh Chary Andrew Poelstra Brian Cagle David Truog Jeanette Wink Gerhard Schwarzer David THANK YOU! - Fraser and Dr. Pamela

Episoder(673)

Ep. 775: The Hydrogen 21-cm Line

Ep. 775: The Hydrogen 21-cm Line

Astronomy Cast Ep. 775: The Hydrogen 21-cm Line By Fraser Cain & Dr. Pamela Gay Streamed live on Dec 15, 2025. Atomic hydrogen is the raw material for stars, but there's a problem. It's cold & dark, b...

22 Des 202534min

Ep. 774: How Does Bad Science Happen?

Ep. 774: How Does Bad Science Happen?

Astronomy Cast Ep. 774: How Does Bad Science Happen? By Fraser Cain & Dr. Pamela Gay Streamed live on Nov 8, 2025. Scientific expertise is under attack on all fronts with concerns coming from politici...

8 Des 202537min

Ep. 773: What Would You Do With $1 Billion For Astronomy?

Ep. 773: What Would You Do With $1 Billion For Astronomy?

Astronomy Cast Ep. 773: What Would You Do With $1 Billion For Astronomy? By Fraser Cain & Dr. Pamela Gay Streamed live on Nov 9, 2025. We are powerless fans of space exploration. But what if some fool...

1 Des 202531min

Ep. 772: 2025 Gift Guide

Ep. 772: 2025 Gift Guide

Astronomy Cast Ep. 772: 2025 Gift Guide By Fraser Cain & Dr. Pamela Gay Streamed live on Nov 9, 2025. It's time once again for our annual gift-giving guide. We've got recommendations for books, movies...

24 Nov 202531min

Ep. 771: Comet Tails

Ep. 771: Comet Tails

Astronomy Cast Ep. 771: Comet Tails By Fraser Cain & Dr. Pamela Gay Streamed live on Nov 8, 2025. With the arrival of the comet 3I/Atlas (Asteroid Terrestrial-impact Last Alert System), the world is g...

17 Nov 202532min

Ep. 770: The Ethics of Mars Exploration

Ep. 770: The Ethics of Mars Exploration

Astronomy Cast Ep. 770: The Ethics of Mars Exploration By Fraser Cain & Dr. Pamela Gay Streamed live on Nov 3, 2025. Hosted by: Fraser Cain and Dr. Pamela L. Gay. It is arguable that humanity now has ...

10 Nov 202541min

Ep. 769: Little Red Dots

Ep. 769: Little Red Dots

Astronomy Cast Ep. 769: Little Red Dots By Fraser Cain & Dr. Pamela Gay Streamed live on Oct 20, 2025. New instruments bring new mysteries, and when James Webb came on line it uncovered a collection o...

27 Okt 202530min

Ep. 768: Comets' Unpredictability

Ep. 768: Comets' Unpredictability

Astronomy Cast Ep. 768: Comets' Unpredictability By Fraser Cain & Dr. Pamela Gay Streamed live on Oct 13, 2025. So it's been decades since we've seen a bright comet in the sky. And actually there was ...

20 Okt 202531min

Populært innen Vitenskap

fastlegen
tingenes-tilstand
jss
forskningno
liberal-halvtime
rekommandert
sinnsyn
rss-paradigmepodden
villmarksliv
rss-nysgjerrige-norge
fjellsportpodden
tidlose-historier
diagnose
kvinnehelsepodden
rss-inn-til-kjernen-med-sunniva-rose
nevropodden
nordnorsk-historie
tomprat-med-gunnar-tjomlid
rss-overskuddsliv
rss-hoyt-lavt-med-ida-tonseth