On the Trail of the Missing Galaxies - The Oldest Stars in the Neighborhood

Embark on a captivating journey through the cosmos in this lecture exploring the enigmatic ultra-faint dwarf galaxies orbiting the Milky Way and Andromeda. Delve into the groundbreaking discoveries made by wide-field surveys over the past decade, unveiling these least luminous, most dark-matter dominated, and least chemically-evolved galaxies known to date. Examine the intriguing "missing satellite problem" and how these faint galaxies offer new insights into this theoretical discrepancy. Explore the latest data from the Keck Observatory and the Hubble Space Telescope, providing evidence on how reionization in the early universe may have suppressed star formation in the smallest seeds of galaxy formation. Learn about the evolution of the universe, star formation processes, and the cutting-edge technologies used in astronomical observations, including the Hubble Space Telescope and the upcoming James Webb Space Telescope. Gain a deeper understanding of how astronomers measure and analyze galactic data, from star clusters to the best astronomical clocks. Discover the implications of these findings for our comprehension of the local universe and the physics of galaxy formation in the early cosmos.

Introduction
Construction Update
Website
Announcements
Social Media
No Observatory
September News
Top Story
Juno Mission Update
Rosetta Mission Update
Late Bloomers
Featured Speaker
Evolution of the Universe
The Missing Satellites
The Sloan Digital Sky Survey
Scale
Star Clusters
How do we know if a galaxy is old
The duct diagram
Measurements of a galaxy
Best clock in astronomy
Why massive stars die more quickly
Carina II
Ultramain Doors
Digital Sky Survey
Hubble Image
Leo 4 Stars
Leo 4 Stars Clock
The Data
The climactic diagram
The M92 data
The Keck data
The Hercules data
Global influence
Hercules
Average Age
Star Formation
Local Universe
James Webb Telescope
UV Optical Telescope
Hubble Space Telescope
James Webb Space Telescope
James Webb Science Goals
James Webb vs Hubble
Telescope Size Comparison
Gold Mirror
Instruments
Test Chamber