California Institute of Technology
Spitzer Space Telescope: Big Galaxy in Baby Universe
This image, titled "Big Galaxy in Baby Universe" features an infrared picture in four parts of a distant galaxy. The text under the image details various specifics about the picture.
Khan Academy
Khan Academy: Gallery: Structure in the Universe
The Universe is very diverse and contains many unique elements that can be observed in this gallery of pictures.
PBS
Pbs: Nova Online: Galaxies, Clusters, and Superclusters
PBS site explores these building blocks of the universe as well as their various types and clusters.
Natural History Museum
Natural History Museum: Our Place in the Universe
Part of a larger online exhibit on the moon and space, this site deals with one's place in the universe. The topics covered include the sun and solar system, the galaxy, and the universe.
Libre Text
Libre Texts: Physics: Dark Matter: Rotation Curve of Galaxy
The universe goes beyond the sun. Scientists study the amount of mass in the universe, but they also need to measure it in the far outreaches of the universe that are in the dark. Find out how they measure the mass of the entire universe.
University of California
University of California Berkeley: Classifying Galaxies
Find out how galaxies are classified and then see if you can apply that knowledge to identify the different types of galaxies. In addition to explaining Hubble's galaxy classification system, the site has links to Hubble Space Telescope...
CPALMS
Florida State University Cpalms: Florida Students: What's the Matter in the Galaxy?
A tutorial that looks at the components within a galaxy such as gas, dust, stars and objects that orbit stars. A PDF file of the tutorial is available.
Sonoma State University
Sonoma State University: 1938 Bruce Medalist: Edwin Hubble
Site honoring the winners of the Catherine Wolf Bruce medal for lifetime contributions to astronomy. Edwin Hubble, the award winner in 1938, is highlighted in a biography.
Science Buddies
Science Buddies: The Milky Way and Beyond: Globular Clusters
Globular clusters, compact groups of about a million stars that move around together in galaxies, are among the oldest objects found in the universe. Since they are found most galaxies and since they've been around for so long, globular...
TED Talks
Ted: Ted Ed: How Small Are We in the Scale of the Universe?
In 1995, scientists pointed the Hubble Telescope at an area of the sky near the Big Dipper. The location was apparently empty, and the whole endeavor was risky- what, if anything, was going to show up? But what came back was nothing...
Cosmos 4 kids
Cosmos4 Kids: You and the Universe
What is the universe? Learn about this topic in this reference article which includes a video that discusses a finding of a distant galaxy by NASA's Hubble.
University of Texas at Austin
The University of Texas Mc Donald Observatory: The Milky Way
Learners will work in groups to make up a story and picture that explains how someone living thousands of years ago in their location might have explained the Milky Way.
Other
University of Leicester: Spiral Galaxies
Provides a general overview of spiral galaxies, including descriptions of the different classes of spiral galaxy.
Other
Sloan Digital Sky Survey: Galaxy Zoo
Explore the universe like you have never seen it. Take part in classifying images of galaxies taken from the Hubble telescope archives. This is a crowdsourced scientific research project.
Harvard University
Chandra X Ray Observatory: Video Podcasts: The Incredible Two Inch Universe
A set of podcasts outlining a four-step process for understanding the vastness of our universe, from the vicinity of the Earth and Moon, out into distant galaxies. Downloadable instructions and a handout are included, as well as...
Australian Broadcasting Corporation
Australian Broadcasting Corporation: News in Science: Universe a Bit Safer Than We Thought
From ABC News in Science, Heather Catchpole's article explores issues related to the collision of galaxies and the subsequent formation of black holes.
Space Telescope Science Institute
Nasa: Hubble Space Telescope: Universe
At this site from HubbleSite you can discover the universe by taking a look back toward the beginning of time. Site contains links to information on planets, stars, galaxies, and much more.
TED Talks
Ted: Ted Ed: Could Human Civilization Spread Across the Whole Galaxy?
Could human civilization eventually spread across the whole Milky Way galaxy? Could we move beyond our small, blue planet to establish colonies in the multitude of star systems out there? These questions are pretty daunting, but their...
Smithsonian Institution
Smithsonian Learning Lab: The Universe, an Introduction
Start with the questions all students ask: How big is the universe, how far away are the planets and stars, how did they form and when, how do they move and why? Build on their natural curiosity. The Smithsonian, in cooperation with...
American Museum of Natural History
American Museum of Natural History: O Logy: How Did the Universe Begin?
Bite-size introduction to two scientists-Hubble and Lemaitre-who played key roles in formulating the theory of the origin of the universe known as the big bang. Includes an interactive timeline on which you can plot out the approximate...
Chem4kids
Chem4 Kids: Chemistry in Space
Anywhere there is matter there is chemistry, therefore chemistry is found all over the universe, not only here on Earth. In fact, scientists have even discovered organic chemistry in other galaxies.
European Space Agency
European Space Agency: Story of the Universe
The story of the universe is told in this engaging site by the European Space Agency. The history of European space science is timelined with dates ranging from 1066 to present day. The birth of galaxies, the big bang, and the beginnings...
Other
University of Cambridge: Astro Adventure
Imagine a time when you can travel through space, planet to planet, cheaply and in comfort, when you can take a trip to the stars as your next holiday. Well, imagine no more. Learn more about the solar system as you take this trip of a...
NASA
Nasa: Astronomy Picture of the Day: Edwin Hubble 1889 1953
Part of the NASA website, this is a reprint of an article in the Journal of the Royal Astronomical Society of Canada about Edwin Hubble's life and accomplishments, stressing his role in the development of modern astronomy.