Hubble Space Telescope | Understanding the Formation and Evolution of Galaxies @hubblespacetelescope | Uploaded June 2022 | Updated October 2024, 11 hours ago.
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
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
![Debris Disks and the Evolution of Planetary Systems [repost]](https://i.ytimg.com/vi/fJJr4tJA0Vc/hqdefault.jpg "Debris Disks and the Evolution of Planetary Systems [repost]
[This repost fixes audio problems with the original recording.]
Debris Disks and the Evolution of Planetary Systems
Christine Chen, Space Telescope Science Institute
Debris disks are dusty disks around middle-aged stars, believed to be analogous to the asteroid and Kuiper belts in our own Solar System. The dust in these systems absorbs and scatters star light, with the absorbed light heating up the dust. Space-based infrared observatories are the best tools with which to not only discover, but also characterize these planetary systems. These studies probe the nature and diversity of extrasolar systems, and help place our own into proper context. Is our Solar System common or rare?
- Astronomy from a 747 starts at 2:20
- Main talk starts at 14:56
Host: Dr. Joel Green
Recorded live on December 1, 2016 at the Space Telescope Science Institute in Baltimore, MD, USA
MORE INFO: http://hubblesite.org/about_us/public_talks/")
