Astronomy & Space

MEASURING THE UNIVERSE (2005)

Measuring the Topology of the Universe @ http://www.astro.princeton.edu/~dns/nas_neg/nas_neg.html

Hubble Space Telescope on Track for Measuring the Expansion Rate of the Universe
http://oposite.stsci.edu/pubinfo/pr/96/21.html
Hubble Space Telescope on Track for Measuring the Expansion Rate of the Universe Press Release Text Photos Background Text Illustrations Related HST Results Glossary of Terms Images of a Galaxy in the Fornax Cluster of Galaxies 56kB 192kB 490kB...

PRAXIS Publishing Ltd. Astronomy & Astrophysics: Measuring the Universe
http://www.praxis-publishing.co.uk/category.asp?cat=Astronomy
Measuring the Universe The Cosmological Distance Ladder Stephen Webb For the past three decades the question "how big is the universe " has been one of the most hotly disputed topics of modern astrophysics and cosmology. Our uncertainty about the...

PH308: Age of the Universe
http://bustard.phys.nd.edu/PH308/cosmology/age.html
Age of the Universe What effect does gravity have on our estimate for the age of the universe? For a critically bound universe (E = 0 in the energy equation), Integrating this equation forward from the initial conditions of the Big Bang (r = 0, t .

Lesson Plan on Measuring the Size of Stars
http://imagine.gsfc.nasa.gov/docs/teachers/lessons/star_size/star_size_cover.html
How Big is That Star? Have you ever wondered about how big stars actually are? Have you ever wondered how astronomers and astrophysicists determine the sizes of stars? Well, everyone can learn how to do this by using the simple representations and..

Measuring the Size of the Universe
http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/971124x.html
Ask a High-Energy Astronomer The Question I'm a 13 year old student from Denmark, who wants to know how big the Universe is and how the size of it is measured. The Answer The simple answer is that the observable Universe is about 10 billion light...

Re: Age of universe
http://madsci.wustl.edu/posts/archives/may96/832874805.As.r.html
The MAD Scientist Network: Astronomy Re: Age of universe Area: Astronomy Posted By: Stephen Murray, Post-doc/Fellow, Astrophysics, University of California, Berkeley Date: Mon Jun 10 17:01:08 1996 This is definitely a hot topic of research in...

[94.02] Measuring Cosmological Parameters with High Redshift Supernovae
http://www.aas.org/publications/baas/v30n4/aas193/882.htm
AAS Meeting #193 - Austin, Texas, January 1999 Session 94. Invited Talks: Perlmutter and Kirshner Invited, Friday, January 8, 1999, 3:40-5:10pm, Ballroom A [Previous] | [Session 94] | [Next] [94.02] Measuring Cosmological Parameters with High...

APOD: May 27, 1999 - NGC 4603 and the Expanding Universe
http://antwrp.gsfc.nasa.gov/apod/ap990527.html
Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. May 27, 1999 NGC 4603 and the Expanding...

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The cosmic map... 15.5 thousand galaxies, and we're somewhere in the middle.

Science News 04/03/1999 Universe Maps Keep Getting Bigger
http://www.abc.net.au/science/news/stories/s19571.htm
Australian and British astronomers have compiled the largest map of the universe by plotting the positions of more than 30 000 galaxies

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The Age of the Universe
http://liftoff.msfc.nasa.gov/academy/UNIVERSE/age.html
Liftoff Home The Age of the Universe Recently, the Hubble Space Telescope was used to measure the distance to a galaxy named "M100". Based on this distance (56 million light-years), the age of the universe is apparently 8 to 12 billion years. Yet...

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Sloan Digital Sky Survey
http://www.sdss.org/sdss.html
Home page of the Sloan Digital Sky Survey

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Measuring distances in astronomy
http://zebu.uoregon.edu/~soper/MilkyWay/distance.html
Measuring distances in astronomy. We have seen that to understand our Galaxy and the rest of the universe, we need to know how far away things are. How do we do that? For distances within our Galaxy and beyond, we have two main methods. The...

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Logarithmic Map of the Universe @ http://www.astro.princeton.edu/~mjuric/universe/ Image by Jorge Colberg (MPIfA, Germany) and the Virgo Consortium) This is a map of the Universe -- from corner to corner, this map spans a region nearly ten billion light years across! Each inch is roughly 2 billion light years, making the scale of.

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Cosmology and the Big bang @ http://curious.astro.cornell.edu/cosmology.php

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Measuring the Universe @ http://www.2think.org/measuring.shtml

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The Elegant Universe @ http://www.pbs.org/wgbh/nova/elegant/program.html

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hubble
http://www.wnet.org/archive/hawking/strange/html/strange_hubble.html
HUBBLE S LAW Edwin Hubble Spectroscopy and Redshift Big Bang Universe By the late 1920s, Edwin Hubble had been taking spectra and measuring distances to a large number of galaxies. From each spectrum he learned the galaxy s redshift, which told him.

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A Science Odyssey: People and Discoveries: Hubble finds proof that the universe is expanding
http://www.pbs.org/wgbh/aso/databank/entries/dp29hu.html
Hubble finds proof that the universe is expanding 1929 The two keys to Edwin Hubble's breakthrough discovery were forged by others in the 1910s. The first key, the period-luminosity scale discovered by Henrietta Leavitt, allowed astronomers to...

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Science News 03/12/1998 Universe older and bigger than previously thought
http://www.abc.net.au/science/news/stories/s17691.htm
An international astronomy team trying to pin down the age of time has found the Universe to be older and bigger than previously thought

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What is Theoretical Cosmology @ http://cfa-www.harvard.edu/~jcohn/tcosmo.html

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2dF Galaxy Survey @ http://msowww.anu.edu.au/2dFGRS/Public/Survey/description.html

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The Doppler Peak
http://www.ll.iac.es/galeria/raw/cosmosom/node4.html
The Doppler Peak

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Measuring the Universe from Galaxy Redshift Surveys @ http://relativity.livingreviews.org/Articles/lrr-2004-8/

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Learning From Light
http://www.mos.org/sln/wtu/learning.html
Learning from Light How do we know about stars and galaxies that are billions of light years away? We may not be able to travel to the stars, but the light of the stars travels to us. By collecting, measuring, and making sense of the patterns of...

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Early Universe was Liquid-like, Study Suggests @ http://www.space.com/scienceastronomy/ap_050419_early_universe.html

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The ABC's of Distances
http://www.astro.ucla.edu/~wright/distance.htm
The ABC's of Distances The ABC's of Distances It is almost impossible to tell the distances of objects we see in the sky. Almost, but not quite, and astronomers have developed a large variety of techniques. Here I will describe 26 of them. I will

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Chandra will target the age of the Universe

Astronomers plan X-ray measurements of galaxy clusters for a new measurement of the Hubble Constant http://science.nasa.gov/newhome/headlines/ast22feb99_1.htm

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The Scale of the Universe Great Debate @ http://antwrp.gsfc.nasa.gov/debate/debate96.htm

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The Accelerating Expansion of the Universe @ http://www.physicstoday.org/vol-58/iss-4/p39.html