Uploaded December 2023 | Updated September 2026, 2 weeks ago
Guest Speaker: Dr. Luna Zagorac, Postdoc Fellow, Perimeter Institute.
Summary: In this webinar, Dr. Zagorac will talk about things that we can’t see in the universe. She begins her talk with what we can see in the universe before she talks about what we can’t see. Some of the things that we can see are tiny, like electrons, neutrinos, protons, muons, etc. In addition, we have gravitational waves that are also observable. As it turns out, however, the universe is composed of 70% dark energy and 30% matter. Of that 30% matter, 80% is considered dark matter which does not interact with light. Astronomers have determined the existence of dark matter by calculating the amount of matter necessary to hold galaxies together. Based on these calculations, they have determined that there needs to be a lot more matter than is observable to keep galaxies together. This non-observable matter is called dark matter.
In her talk, Dr. Zagorac proposes that dark matter might be fuzzy, consisting of extremely tiny particles called axons. Axons behave like electrons in an atom but are so much smaller.
If you are interested in what the universe is made of, this video will open your eyes to the fascinating study of fuzzy dark matter. We hope you enjoy it!
iTelescope itelescope.net
Chapters
0:00 Introduction
2:05 Preview of presentation
2:50 What we see in the universe
11:28 What we don’t see in the universe
16:45 Pie-chart of the universe
18:20 If we can’t see it, how do we know it’s there?
20:35 Where does dark matter live?
21:38 Figuring out where dark matter comes from
24:19 Is dark matter fuzzy, AKA axions
29:00 Dark matter halo’s
36:30 Recap
#iTelescope
#astrophotography
#deepsky
#astro
#astronomy
#cosmology
Guest Speaker: Dr. Luna Zagorac, Postdoc Fellow, Perimeter Institute.
Summary: In this webinar, Dr. Zagorac will talk about things that we can’t see in the universe. She begins her talk with what we can see in the universe before she talks about what we can’t see. Some of the things that we can see are tiny, like electrons, neutrinos, protons, muons, etc. In addition, we have gravitational waves that are also observable. As it turns out, however, the universe is composed of 70% dark energy and 30% matter. Of that 30% matter, 80% is considered dark matter which does not interact with light. Astronomers have determined the existence of dark matter by calculating the amount of matter necessary to hold galaxies together. Based on these calculations, they have determined that there needs to be a lot more matter than is observable to keep galaxies together. This non-observable matter is called dark matter.
In her talk, Dr. Zagorac proposes that dark matter might be fuzzy, consisting of extremely tiny particles called axons. Axons behave like electrons in an atom but are so much smaller.
If you are interested in what the universe is made of, this video will open your eyes to the fascinating study of fuzzy dark matter. We hope you enjoy it!
iTelescope itelescope.net
Chapters
0:00 Introduction
2:05 Preview of presentation
2:50 What we see in the universe
11:28 What we don’t see in the universe
16:45 Pie-chart of the universe
18:20 If we can’t see it, how do we know it’s there?
20:35 Where does dark matter live?
21:38 Figuring out where dark matter comes from
24:19 Is dark matter fuzzy, AKA axions
29:00 Dark matter halo’s
36:30 Recap
#iTelescope
#astrophotography
#deepsky
#astro
#astronomy
#cosmology
