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Latest Cosmology Stories

92dd77ff79a2def12e54fa350f33090b1
2007-05-24 09:50:00

When Dutch astronomer Willem de Sitter proposed a static model of the universe in the early 1900s, he was some 3 trillion years ahead of his time. Now, physicists Lawrence Krauss from Case Western Reserve University and Robert J. Scherrer from Vanderbilt University predict that trillions of years into the future, the information that currently allows us to understand how the universe expands will have disappeared over the visible horizon. What remains will be "an island universe" made from...

8fc82ae3414019824e38bf7e0afb38891
2007-01-17 09:45:16

Researchers at the University of Copenhagen's Dark Cosmology Centre at the Niels Bohr Institute have brought us one step closer to understanding what the universe is made of. As part of the international collaboration ESSENCE they have observed distant supernovae (exploding stars), some of which emitted the light we now see more than half the age of the universe ago. Using these supernovae they have traced the expansion history of the universe with unprecedented accuracy and sharpened our...

f5cc3f3c8cfe6a270e7eec489e0ca1731
2005-04-20 08:03:03

Cool spaces in the cosmic microwave background -- thought to be the 'birthmarks' of galaxies and clusters of galaxies -- should be bigger than recently reported, according to a new analysis of satellite data by scientists at The University of Alabama in Huntsville (UAH). This new analysis suggests that there is enough matter in the universe to bend light and other radiation as it travels through space, a finding that might deflate the current standard model of inflationary cosmology -- how...

7e25490dbadf882a286059c4e92c19a61
2005-04-13 18:50:14

Helsinki -- The concept of time is self-evident. An hour consists of a certain number of minutes, a day of hours and a year of days. But we rarely think about the fundamental nature of time. Time is passing non-stop, and we follow it with clocks and calendars. Yet we cannot study it with a microscope or experiment with it. And it still keeps passing. We just cannot say what exactly happens when time passes. Time is represented through change, such as the circular motion of the moon around...

73b562c0aa14da4bef538028242977d41
2005-01-12 08:33:06

SAN DIEGO, California (AFP) -- Astrophysicists have drawn up the largest map to date of the universe, confirming gravity's role in its formation and establishing an accurate way of measuring its expansion, according to studies presented at a meeting of the American Astronomical Society. Daniel Eisenstein, a University of Arizona scientist said the observations made by two internatioal teams of scientists showed the universe was flat, expanding and marked by ripples caused by the shock waves...

24476bec4efeb74f644578b8923b04de1
2005-01-06 08:00:00

In part 2 of the interview, Astronomer Royal, Sir Martin Rees discusses the limits to our knowledge of what might have preceded the big bang. Everyone asks the question: what was 'there' the instant before everything came to be?, but the question may not go as deep as the answers it spawns. Astrobiology Magazine -- Britain's Astronomer Royal, Martin Rees, took time from his busy schedule to talk with Astrobiology Magazine's Chief Editor and Executive Producer, Helen Matsos. His three-part...

2004-11-26 18:00:11

THE BIG BANG by Simon Singh (Fourth Estate, Pounds 20) ROLL UP for the greatest story ever told! At last, science describes the creation of the universe! Well, not quite. On creation as most of us understand it, science is silent. It has no better explanation of how a universe appears out of nothing than you or I, and scientists are just as likely to bring God into the story. What science can describe, however, is what happened after energy, matter, time and space appeared...


Latest Cosmology Reference Libraries

Cosmology
2014-01-12 00:00:00

Image Caption: The Hubble Extreme Deep Field (XDF) was completed in September 2012 and shows the farthest galaxies ever photographed by humans. Each speck of light in the photo is an individual galaxy, some of them as old as 13.2 billion years; the observable universe is estimated to contain more than 200 billion galaxies. Credit: NASA/Wikipedia What is Cosmology? I once commented to an acquaintance that I was fascinated by the field of Cosmology, and mused that if I had more time, I...

45_b90d45a4e7d89d873d39705549e516ce
2014-01-12 00:00:00

Sample Entry: Astronomy is the scientific study of stars, planets, comets, galaxies, and other phenomena that occur outside Earth's atmosphere (e.g. cosmic radiation). Astronomy deals with the evolution, physics, chemical makeup, meteorology, and motion of celestial objects, and also the formation of the universe. The word Astronomy comes from the Greek words astron (meaning "star") and nomos (meaning "law"). Astronomy is one of the oldest sciences. Since the dawn of man, people always...

8_67ff07d77c86523b0eab2955b9ab43e02
2004-10-19 04:45:44

Cosmology -- area of science that aims at a comprehensive theory of the structure and evolution of the entire physical universe. Modern Cosmological Theories Present models of the universe hold two fundamental premises: the cosmological principle and the dominant role of gravitation. Derived by Hubble, the cosmological principle holds that if a large enough sample of galaxies is considered, the universe looks the same from all positions and in all directions in space. The second point...

6_702981515d3a0633aa71150cbf2d7a4d2
2004-10-19 04:45:41

Quintessence (Dark Energy) -- Quintessence or dark energy is a hypothetical form of energy postulated to exist in order to explain observations of an accelerating universe. This energy would act like a vacuum pressure, pushing things apart. Other attempts to explain these recent observations involve a non-zero cosmological constant, which has the same effect. Indeed, sometimes quintessence is said to result in a non-zero cosmological constant, and conversely a non-zero cosmological...

6_8a4f7f5ee46b1deaa6cadfd732d2b1172
2004-10-19 04:45:41

Accelerating universe -- In the late 1990s, observations of type I supernova produced the unexpected result that the expansion of the universe appears to be accelerating. These observations appear more firm as new data has appeared. This means that the speed with which a distant galaxy recedes from us increases over time. If this trend continues, eventually we won't be able to see any other galaxies any more. This new theory of the end of the Universe has been called the Big Rip....

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Word of the Day
caparison
  • A cloth or covering, more or less ornamented, laid over the saddle or furniture of a horse, especially of a sumpter-horse or horse of state.
  • Clothing, especially sumptuous clothing; equipment; outfit.
  • To cover with a caparison, as a horse.
  • To dress sumptuously; adorn with rich dress.
This word ultimately comes from the Medieval Latin 'cappa,' cloak.
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