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Terms: galaxies
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- Hubble Finds Most Distant Galaxies (CNN)
Includes a picture of galaxies believed to be 95 percent back to the time when the universe began, using an infrared camera.
- Galaxies Collide with a Stellar Bang (CNN News)
"Astronomers have found what they are calling the perfect cosmic storm, a galaxy cluster pile-up so powerful its energy output is second only to the Big Bang."
"The cluster collision is the most powerful ever recorded and a fresh glimpse of the cluster merging process, where great swarms of galaxies smash into one another to form a single galactic structure."
"Researchers said the Abell 754 observations match closely with those predicted by computer models and are a sign that astronomers are on the right track with theories of galactic evolution and the structure of the universe."
"NASA researcher Richard Mushotzky, U.S. project scientist for the XMM-Newton observatory, told reporters that the research also adds to the understanding of dark matter and dark energy, two invisible phenomena that can determine the rate of merging galactic clusters."
" 'In some ways, galaxy clusters are the universe in a box,' Mushotzky said. 'If we can understand them with some detail, we can apply those findings to the universe as a whole." 9-04
- Groups and Clusters of Galaxies (Wikipedia.org)
"Galaxy groups and clusters are super-structures in the spread of galaxies of the cosmos. Matter throughout the visible Universe has, over the course of the Universe's history, aggregated into a range of large-scale structures under the influence of gravity. Groups and clusters may contain from ten to thousands of galaxies. The clusters themselves are involved in larger groups called superclusters." 10-04
- Questions About Galaxies (ASK and Astronomer for Kids)
Provides questions and answers for kids and adults. 01-06
- Galaxies (Wikipedia.org)
"A galaxy is a massive, gravitationally bound system that consists of stars, an interstellar medium of gas and dust, and an unknown dark matter." 01-07
- Galaxies Topics (Wikipedia.org)
Provides a table of contents on galaxies. 01-07
- Pictures and Sounds of Galaxies (CosmicLog.msnbc.msn.com)
"Help yourself to the biggest pictures and the coolest sounds from space." 06-08
- Hubble Photographs Early Galaxies at Birth (USA Today)
"Hubble astronomers unveiled a panoramic view Tuesday of the universe's youngest galaxies, offering the earliest look yet at the puny predecessors to our own Milky Way."
"Galaxies are the islands of stars filling the cosmos. Large ones such as our own Milky Way galaxy span more than 100,000 light-years (nearly 600,000 trillion miles) and contain hundreds of billions of stars."
"The few faint earliest galaxies that emerge from the survey of about 7,500 galaxies are much smaller and filled with young, massive stars. They shine from only 600 million to 800 million years after the Big Bang, which took place about 13.7 billion years ago." 01-10
- Photos of Galaxies (MSNBC News)
Provides pictures. 04-10
- Photos of Galaxies (TeacherCertification.org)
Provides pictures. 04-10
- Drawings and Photos of Galaxies and Space (Christian Science Monitor)
Provides drawings and pictures. 07-10
- Collision of Galaxies Seen Through "Galactic Lens" (CBS News)
"From the far reaches of space, astronomers brought two colliding galaxies into sharp focus by patching together images from several powerful telescopes. That, and the luck of a rare 'galactic lens.' "
"A giant, heavy object bends light from objects behind it due to its strong gravity - an effect called gravitational lensing. Astronomers can study objects through such a cosmic magnifying glass that would otherwise be invisible. But for a gravitational lens to work, the foreground lensing object - in this case a galaxy - and the one beyond it need to be precisely aligned."
"That's what happened in this rare instance."
- Stars and Nebulae - Printable Pictures (NASA - Spaceplace)
Provides printable color pictures of stars, galaxies, and nebulae. Includes the Butterfly, Carina, Eagle, Hourglass, Eskimo, Orion, Stingray, Trifid, and the NGC3132 nebula. (The files are rather large and will take a while to load on a 28.8k modem) 9-01
- Motion of Matter at the Center of a Galaxy Filmed (Nature - Clarke)
Provides the first animation of the movement of matter at the center of a galaxy. 3-02
- Earth from Far, Far Away and Very, Very Close (Florida State University - Davidson)
"View the Milky Way at 10 million light years from the Earth. Then move through space towards the Earth in successive orders of magnitude until you reach a tall oak tree just outside the buildings of the National High Magnetic Field Laboratory in Tallahassee, Florida. After that, begin to move from the actual size of a leaf into a microscopic world that reveals leaf cell walls, the cell nucleus, chromatin, DNA and finally, into the subatomic universe of electrons and protons."
- Evolution of the Universe (NASA)
"The myriad galaxies in the Hubble Deep Field represented the first big step for Hubble astronomers to understand galaxy evolution. But studying galaxy evolution in the Hubble Deep Field is like trying to understand the population of a country by sampling a small village. Astronomers don't know if the galaxies in that village are representative of the universe's galactic population. The GOODS survey, on the other hand, is akin to sampling the population of a large city to make inferences about galaxies in the cosmos." 6-03
- 03-29-04 Spirals in Mars Snow Caps Unraveled (CNN News)
"Odd spiraling gorges etched deep into the polar ice caps of Mars have stumped scientists for decades. The huge arcing troughs radiate outward like arms of a pinwheel, creating an overall shape that visually and mathematically resembles hurricanes, spiral galaxies and even some seashells."
"Now there is an apparent solution to the mystery, put forth by Jon Pelletier of the University of Arizona in Tucson."
"The tilted planet causes ice on one side of a crack to heat and vaporize, deepening and widening the crack. Then the water vapor hits the shady, colder side of the growing canyon and refreezes." 3-04
- Our Galaxy - Age of Galaxy Finally Estimated (BBC News)
"A team working with the Very Large Telescope (VLT) in Chile report that our galaxy is 13,600 million years old, give or take 800 million years. The observations were made by measuring the content of the element beryllium in two stars contained in a so-called globular cluster in our galaxy. The beryllium content of stars rises with time, so it can be used as a 'cosmic clock' to calculate their ages." 8-04
- Our Galaxy - From the Outside (BBC News)
"This [picture] is our home galaxy as it might look if you could travel outside it and look back." 8-04
- Our Galaxy Has a Black Hole in the Center (BBC News)
"There now seems little doubt that a supermassive black hole resides at the centre of our galaxy, the Milky Way." 8-04
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