... velocities of stars, galaxies and quasars, search for planets around other stars, or study the expansion of the Universe. A spectrograph must be accurately calibrated so that the frequencies of light ...
... the Universe from each other. This would explain why the expansion of the Universe is not constant, but accelerated. Nevertheless, this phenomenon can only be detected when achieving observationally ...
... Astrophysical Observatory in Cambridge, Mass., who led the research. "Whatever is forcing the expansion of the universe to speed up is also forcing its development to slow down."
Vikhlinin and his ...
... In 1998, studies of distant explosions called "type Ia supernovae" indicated that the expansion of the Universe is accelerating, an observation attributed to the repulsive force of a mysterious "dark ...
... investigate the nature of "dark energy," a mysterious cosmic component responsible for the acceleration of the expansion of the universe. "Just like household dust, cosmic dust can be a nuisance," ...
... 10 years or so, the large astronomical surveys that are just starting up to plot the expansion of the universe by measuring the brightness of the most distant supernovas should be able to detect the ...
A new color-coded map represents the first visual evidence of the mysterious force that astronomers think is causing the expansion of the universe to speed up.
... been looking primarily for Type Ia supernovae that could help astronomers understand the accelerating expansion of the universe, but they also find other gems along the way, Smith said.
"Looking at ...
... over time, or even whether it may be illusory, with its most obvious effect, the accelerating expansion of the universe, resulting instead from some unperceived flaw in Einstein's General Theory of ...
There could be an explanation for the accelerating expansion of the universe even weirder than dark energy.
... with different vantage points concurring on an important call in a tight football game, an international team of cosmologists has independently confirmed the accelerating expansion of the universe.
... called the constant his "greatest mistake."
But in recent years, the discovery of an accelerated expansion of the universe led scientists to postulate the existence of "dark energy." One candidate ...
... is smaller than 5 percent. The new value for the expansion rate, known as the Hubble constant, or Ho (after Edwin Hubble who first measured the expansion of the universe nearly a century ago), is 74. ...
...
Says Aldering, "Right now the main questions in using Type Ia supernovae to study the expansion of the universe are basic cosmology – anchoring the Hubble diagram – and reducing systematic errors – ...
... rate of the Universe," said Braatz.
Dark Energy was discovered in 1998 with the observation that the expansion of the Universe is accelerating. It constitutes 70 percent of the matter and energy in ...
