Articles related to "Edwin Hubble"



Edwin Hubble, Scientist
Brief bio and discoveries of Edwin Hubble, who discovered more galaxies and that the universe expands; also known for Hubble's Law.
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Edwin Hubble - Astronomer with a Bang
Edwin Hubble began the field of cosmology when he proved that the universe is made up of many galaxies. He went on to become famous.
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Big Bang Theory
Several scientific tests show the Big Bang Theory provides a true vision of the Origin of the Universe to within 1/100 of a second after The Bang
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The World's Greatest Scientists
The great scientists in history either changed the world, their science or both. This group of top scientists made a big impact on their science.
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Famous People Of The Great War
They were not famous at the time, but history would remember these writers, actors, politicans and popes more for what they would accomplish later than for the war.
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The Expansion of the Universe
Are you and everything around you expanding as the Universe balloons outward?
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The World's Best Scientific Discoveries
Scientists over time have made incredible discoveries that have helped others understand the way the world works. Here are some of the best ones.
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Discovering The Expanding Universe
Edwin Hubble along with his assistant Milton Humason made the observations of distant galaxy redshifts that showed the expansion of the universe.
expansion of the universe hubble humason redshifts big bang theory

Predicting the Expanding Universe
Hubble discovered the expansion of the universe, but De Sitter, Friedman, & Lemaitre used Einstein's general relativity to predict the expanding universe & the big bang.
expansion of the universe general relativity einstein de sitter friedman

The Scale of Things: Angles, Speeds and Distances in Astronomy

Galaxies and Clusters of Galaxies
Galaxies like our Milky Way are large groups of stars containing from a few million to about a trillion stars. Galaxies also group together in clusters of galaxies.
galaxies milky way spiral galaxy elliptical galaxy clusters of galaxies

Hubble's Galaxy Classifications
Edwin Hubble devised the scheme that astronomers use to classify galaxies outside the Milky Way galaxy.
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Rubber Bands
Did you know you could have a lot of fun with a rubber band?
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The Hubble Space Telescope
Astronomy was considered an arcane hobby. But after Hubble returned some images that looked like Art, that perception was changed to awe.
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What Exactly is a Galaxy?
hubble types galaxy

Extraterrestrial planets, over 100 and counting.
How astronomers detected the first extrasolar planets and how it relates to the only previosuly known example, the Solar System.
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Faster Than Light Expansion of the Universe
Although Einstein's special relativity says that nothing can move through space faster than light, space itself can expand and carry away galaxies faster than light.
spacetime speed of light superluminal faster than light expansion

History of Mount Wilson Observatory
Until the Mt Palomar 200" telescope, Mt Wilson's Hooker 100" and the 60" were the world's largest telescopes, allowing Edwin Hubble to discover the expanding universe.
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Spectrum of the Andromeda Galaxy
Vesto M. Slipher was the first astronomer to measure the spectrum of an external galaxy. His work led to Hubble's discovery that the universe is expanding.
vesto slipher slipher andromeda galaxy galaxies spectra

Steady State and Big Bang Theories
Both the steady state and big bang cosmological theories are based on certain fundamental cosmological assumptions and observations.
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Stellar Populations in the Galaxy
During World War II, Baade discovered that there were distinct stellar populations: The older Population II stars and Younger Population I stars.
stellar stars population i population ii walter baade

The Cosmic Distance Ladder II, Stars as Standard Candles
discussion of Cepheid variables, and other stars as distance indicators
cepheid variables distance indicators astronomy hubble constant

The Cosmic Distance Ladder, III: Measuring the Hubble Constant
a brief discussion on the Hubble constant and recent efforts to measure it
astronomy c extragalactic distance scale

The Cosmic Microwave Background
A discussion of the history and future of CMB science
cmb cosmology cosmic microwave background microwave background map

Wisconsin Astronomy
Visit a planetarium or observatory in Wisconsin and learn more about astronomy.
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Einstein's Errors Were in a Class by Themselves
Physics professor and author Hans Ohanian says Einstein's work was fraught with errors in the details, but his thinking was still decades ahead of all his contemporaries.
albert einstein hans c. ohanian einstein’s mistakes nobel prize cosmological constant


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