Understanding the Formation and Evolution of Galaxies

Cameron Hummels, Caltech
Galaxies-like our own Milky Way-are among the basic building blocks of our universe. Discovered only one hundred years ago, galaxies are complex systems consisting of billions of stars, along with gas, dust, and dark matter. They occupy much of what we see when we gaze at the night sky through our telescopes.
Astronomers learn about galaxies using both telescope observations and sophisticated computer simulations. These numerical investigations are crucial in helping us better understand how galaxies form and evolve since the birth of our universe.
To be broadcast live on Tuesday, June 7, 2022 at 8 PM EDT (UTC-4)
More information: www.stsci.edu/public-lectures

[@yesterday1396]

Thank you so much for doing these! No words to properly express how grateful I am.

[@Birbface]

One of the best lectures!

[@sushantbhardwaj670]

Awesome, keep bringing more of these kind of videos, really informative and interesting. God bless you 🙂

[@rhoddryice5412]

13:49 Dr Hummels

[@wonderplanet343]

Thank you very much !!

[@krafique]

Really great ,very well put and explained and in matter that normal minds can benefit from it :)

[@you2tooyou2too]

re 1:14:00 They start discussing the 'voids', and I find it easiest to visualize this structure of filaments & clusters, rather as a slowly condensing foam like on your bath or dish water, where you have several big bubbles, and still some visible fluid lines & clusters of tiny bubbles at the film intersections of 2 or more big bubbles. The recent Hubble limit mapping shows it quite clearly if you have a rotatable 3D model.
re 1:24:15 Shock heat of galactic collisions, is almost entirely gravitational. Since there is negligible actual body contact, and so called 'dark matter' is the main generator of that 'heat', and the perturbation of the trajectories of every visible body in the collision.

[@verenasonne3072]

So the milky way is a blueberry and our universe is a big blueberry cake 🧁 But you know what happens to a cake when it has reached it's maximum expansion? Someone is going to eat it 😋

[@Birbface]

When are you going to rename it Webbsite

[@Shreyy17]

Nice 🙂

[@bjg464]

Better thumbnails would help these stand out in the feed. I feel like I miss them all the time

[@marc-andrebrunet5386]

🤘📺👍

[@mickyfen2]

So you go by what you see & not by reading the title. Never judge a book by it's cover.

[@marc-andrebrunet5386]

@@mickyfen2 it was a suggestion.. do you need help for reading ?

[@rhoddryice5412]

The thumbnail contains the title and the speaker. Two most important pieces of information when I pick which lectures to watch. I subscribe to plenty of science channels and I think this one is quite good at thumbnails and titles. The worst is CfA Colloquium. They name their lectures something like “CfA Colloquium Live Steam” every time.

[@glassfasterfirst]

Add an alert for new videos, then you won’t miss anything!

[@ArtDocHound]

Less white background slides please.

[@Medicinnov8r]

Don’t the Pillars fly in the face of the Big Bang theory?
Why can’t the expansion of space be the result of momentum?

[@shadetreader]

Too much Hubble worship without mentioning others who contributed to the concepts he gets all the credit for.

[@krishndas1648]

🌃🌃🌌🌌🌎🌷

[@ronmader]

1:01:15 Milkomeda en.wikipedia.org/wiki/Andromeda%E2%80%93Milky_Way_collision

[@TallDude73]

Please summarize in 10 minutes or less. I can't do 90 minutes. Interesting topic, though.

[@rhoddryice5412]

The lecture stars at
13:49 Historical perspective
37:12 What is a galaxy
45:41 How to simulate
1:00:00 Simulation of the future of Milky Way
1:04:45 Summary and QnA

[@ArtDocHound]

Try the Seeker channel.