News tagged with dark energy
Related topics: universe , dark matter , galaxies , white dwarfs , big bang
Radio telescopes extend astronomy's best 'yardstick'
Radio astronomers have directly measured the distance to a faraway galaxy, providing a valuable "yardstick" for calibrating large astronomical distances and demonstrating a vital method that could help determine the elusive ...
Jun 08, 2009 |
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Celebrating gravity’s light-bending landmark
(PhysOrg.com) -- Today Oxford University scientists are joining in a special celebration of the first test of Albert Einstein’s theory of gravity on the remote African island where the ground-breaking experiment ...
May 29, 2009 |
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Galactic nuclei offer some indication of axionlike particles
(PhysOrg.com) -- “Axionlike particles are interesting because they come up regularly when scientists study string theory. By looking at their properties, you hope to learn about string theory, or some other unified theory ...
May 28, 2009 |
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Better Supernovae Measurements Aim To Improve Understanding of Dark Energy
(PhysOrg.com) -- A new technique for measuring the distances to supernovae more accurately than ever before has been developed by a team of scientists from Yale University, Lawrence Berkeley National Laboratory ...
May 22, 2009 |
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Refurbished Hubble Ready to Resume Exploration
(PhysOrg.com) -- The Hubble Space Telescope has been with us for nearly two decades. In that time, its breathtaking images have captured people’s imaginations and its groundbreaking science has revealed some ...
Space & Earth / Space Exploration
May 19, 2009 |
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Cosmology's best standard candles get even better
Members of the international Nearby Supernova Factory (SNfactory), a collaboration among the U.S. Department of Energy's Lawrence Berkeley National Laboratory, a consortium of French laboratories, and Yale ...
May 18, 2009 |
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Astronauts to undertake fourth walk to repair Hubble telescope
US astronauts on Sunday will undertake a fourth in a series of five daily spacewalks intended to equip the 19-year-old Hubble Space Telescope for at least another five years of valuable scientific work.
Space & Earth / Space Exploration
May 17, 2009 |
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Spacewalkers equip Hubble with new computer
Spacewalking astronauts upgraded the Hubble telescope for the first time in seven years, equipping the 19-year-old stargazer with a powerful new camera and science computer.
Space & Earth / Space Exploration
May 15, 2009 |
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Hubble: a time machine that revolutionized astronomy
The Hubble space telescope, the object of NASA's fifth and last servicing mission next week, is a veritable time machine that has revolutionized humankind's vision and comprehension of the universe.
May 10, 2009 |
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The day the universe froze: New dark energy model includes cosmological phase transition
Imagine a time when the entire universe froze. According to a new model for dark energy, that is essentially what happened about 11.5 billion years ago, when the universe was a quarter of the size it is today.
May 08, 2009 |
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Refined Hubble Constant narrows explanations for dark energy
Whatever dark energy is, explanations for it have less wiggle room following a Hubble Space Telescope observation that has refined the measurement of the universe's present expansion rate to a precision where ...
May 07, 2009 |
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Can R2 gravity explain dark matter?
(PhysOrg.com) -- "In many ways, the standard model of cosmology works very well," Jose Cembranos tells PhysOrg. "However, there are very basic features that we just do not know. We have dark energy and dark matter. They d ...
Apr 20, 2009 |
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Dark matter: Physicists may have found piece of the puzzle
European astronomers said on Wednesday that an anomalous energy signal detected by an orbiting satellite could be a telltale of the enigmatic substance known as dark matter.
Apr 01, 2009 |
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Astronomers Gravitate Toward Einstein's Telescope
Scientists are harnessing the cosmos as a scientific 'instrument' in their quest to determine the makeup of the universe.
Feb 20, 2009 |
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Cosmologists aim to observe first moments of universe
During the next decade, a delicate measurement of primordial light could reveal convincing evidence for the popular cosmic inflation theory, which proposes that a random, microscopic density fluctuation in ...
Feb 16, 2009 |
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