Uploaded March 2023 | Updated September 2026, 2 weeks ago
Guest Speaker: Roan Haggar, Postdoc fellow, University of Waterloo
Summary: In this video, you will learn how astronomers conduct simulations regarding the universe. The time scales required to study the evolution of any astronomical object can be in the hundreds of thousands to billions of years. Simulations allow astronomers to speed up time to study very long evolutions. To build a simulation, you need matter; initial conditions; and gravitational physics. Simulations are used to point out mistakes in physics. They also provide constraints on physics – it allows astronomers to do experiments.
If you are interested in how simulations are used to study the early universe and how astronomers can use them to do experiments, this video is for you. We hope you enjoy it!
iTelescope itelescope.net
Chapters
0:00 Introduction
3:44 Hand-drawn Whirlpool Galaxy vs. Hubble Whirlpool image
6:08 Milky-way Galaxy
7:41 Poll Question
11:14 Evolution in astronomy
13:58 What are simulations?
15:07 Merger of the Milky-way and Andromeda Galaxy
16:41 Simulation after the Big Bang
21:02 How do we build a simulation?
23:00 Limits on simulations
25:57 Setting initial conditions
27:17 Physics used in simulations
29:03 Why are simulations useful?
36:59 Can you spot the simulation?
43:29 What’s next with simulations?
#iTelescope
#astrophotography
#deepsky
#astro
#astronomy
#cosmology
Guest Speaker: Roan Haggar, Postdoc fellow, University of Waterloo
Summary: In this video, you will learn how astronomers conduct simulations regarding the universe. The time scales required to study the evolution of any astronomical object can be in the hundreds of thousands to billions of years. Simulations allow astronomers to speed up time to study very long evolutions. To build a simulation, you need matter; initial conditions; and gravitational physics. Simulations are used to point out mistakes in physics. They also provide constraints on physics – it allows astronomers to do experiments.
If you are interested in how simulations are used to study the early universe and how astronomers can use them to do experiments, this video is for you. We hope you enjoy it!
iTelescope itelescope.net
Chapters
0:00 Introduction
3:44 Hand-drawn Whirlpool Galaxy vs. Hubble Whirlpool image
6:08 Milky-way Galaxy
7:41 Poll Question
11:14 Evolution in astronomy
13:58 What are simulations?
15:07 Merger of the Milky-way and Andromeda Galaxy
16:41 Simulation after the Big Bang
21:02 How do we build a simulation?
23:00 Limits on simulations
25:57 Setting initial conditions
27:17 Physics used in simulations
29:03 Why are simulations useful?
36:59 Can you spot the simulation?
43:29 What’s next with simulations?
#iTelescope
#astrophotography
#deepsky
#astro
#astronomy
#cosmology
