Curated OER
Galaxies, Part 3 of 3
Part three concludes "A Practical Guide to the Universe," completing the description of the Big Bang Theory and what it means. This episode touches on light travel, light speed, and what that means in relation to what we see. While this...
Curated OER
Stunning Portrait of the Milky Way Galaxy
NASA was able to capture an image of our Milky Way galaxy that helps scientists better understand its composition and stellar evolution. A very clear narrator describes what the image shows and what it means to science and our galaxy.
Science Today
Infant Galaxies
This brief video displays many of the latest images collected by the Hubble telescope. Viewers realize that much of what we see takes us back in time since the light takes so long to reach planet Earth. Embed this in a presentation about...
PBS
Pbs Learning Media: Hubble's Expanding Universe
We know the universe is expanding, but how? This adapted video segment, using footage from NOVA and NASA, examines Edwin Hubble's work and how his findings laid the foundation for the Big Bang theory. [3:22]
Khan Academy
Khan Academy: Crash Course Big History: The Big Bang
Crash Course is a fast, funny, irreverent look at history beginning with the Big Bang Theory. In this episode, brothers John and Hank Green gives us their take on what makes Big History so darn important. [13:55]
PBS
Pbs Learning Media: Crash Course Astronomy: Galaxies, Part 1
Galaxies contain gas, dust, and billions of stars or more. They come in four main shapes: elliptical, spiral, peculiar, and irregular. Galaxies can collide, and grow in size by eating each other. [11:51]
PBS
Pbs Learning Media: Crash Course Astronomy: Galaxies, Part 2
Active galaxies pour out lots of energy, due to their central supermassive black holes gobbling down matter. Galaxies tend not to be loners, but instead exist in smaller groups and larger clusters. Our Milky Way is part of the Local...
Science Friday Initiative
Science Friday: Charting the Local Universe
Karen Masters describes the 2MASS Redshift Survey, an effort to map the location of galaxies beyond the Milky Way.
Khan Academy
Khan Academy: Stars, Black Holes and Galaxies: Cepheid Variables 1
Describes the impact of Henrietta Swan Leavitt's work on Cepheid variable stars. She discovered a linear relationship between the relative luminosity and the period of these variable stars. This enabled astronomers to estimate how far...
Crash Course
Crash Course Astronomy #39: Galaxies, Part 2
Active galaxies pour out lots of energy, due to their central supermassive black holes gobbling down matter. Galaxies tend not to be loners, but instead exist in smaller groups and larger clusters. Our Milky Way is part of the Local...
Crash Course
Crash Course Big History #2: Exploring the Universe
Learn about what happened in the Universe after the big bang. Also find out about cosmic background radiation, how hydrogen and helium turned into stars, formed galaxies, created heavy elements, and eventually created planets. [14:37]
Crash Course
Crash Course Astronomy #38: Galaxies, Part 1
The Milky Way is our neighborhood in the universe. It's a galaxy and there are many others out there. Galaxies contain gas, dust, and billions of stars or more. They come in four main shapes: elliptical, spiral, peculiar, and irregular....
Crash Course
Crash Course Astronomy #37: The Milky Way
Today we're talking about our galactic neighborhood: The Milky Way. It's a disk galaxy, a collection of dust, gas, and hundreds of billions of stars, with the Sun located about halfway out from the center. [2:35]
Khan Academy
Khan Academy: Scale of Earth, Sun, Galaxy and Universe: Hubble Image of Galaxies
An examination of a Hubble telescope image showing far away galaxies. [4:12]
Khan Academy
Khan Academy: What Is Big History?
We hear David Christian's explanation of the project Big History which seeks to answer questions of the universe from a variety of disciplines and combine them into one coherent story that will explain how everything came to be the way...
Khan Academy
Khan Academy: Powers of Ten (1977)
Powers of Ten video takes us on an adventure by showing the magnitude of the universe!
Khan Academy
Khan Academy: Supernova (Supernovae)
This Khan Academy resource is a video about what a Supernova (Supernovae) is.
Science Friday Initiative
Science Friday: Massive "Phoenix Cluster" Supersizes Star Creation
Astronomers have found a massive galaxy cluster that's making stars at a record pace.
California Academy of Sciences
California Academy of Sciences: Infant Galaxies
The Hubble Telescope's latest image shows 13 billion-year-old infant (and still forming) galaxies. [1:25]
Science Friday Initiative
Science Friday: What Happens When Two Galaxies Collide?
Astronomers say the Andromeda and Milky Way galaxies will collide in four billion years.