Astronomy Videos

Our full collection of all Deep Astronomy videos. Here you'll find everything from live astronomy hangouts to regular space news episodes and short space documentaries. You can browse by keyword, specific categories or just have poke around and see what you can find. There's definitely something for everyone!

Found 3 videos tagged with "ultra diffuse galaxies" remove tag

Mystery of Ultra Diffuse Galaxy with NO Dark Matter Solved

8th Jun, 2019 - 10K views

Remember that ultra diffuse galaxy I told you about in SFNs 226 and 232? You know, the one with NO dark matter? Well turns out there is dark matter there.

After Dragonfly 44: Astronomers Now Find Galaxy with NO Dark Matter

29th Mar, 2018 - 6590 views

In this episode, the case for proving that there is no such thing as dark matter just got a lot harder. After announcing the discovery of an ultra-diffuse galaxy made up of 99.99 percent dark matter.

The Dark Galaxy Dragonfly 44: A Galaxy Almost Entirely Dark Matter

20th Mar, 2018 - 18.3K views

Relatively nearby at 300 million light years from Earth, the dark galaxy Dragonfly 44 had been missed by astronomers for decades because it was dim. This galaxy had too few stars. Astronomers suspected it was mostly dark matter.