Space is Expanding Quicker than-Physics can Explain - Physics-Astronomy.org

Space is Expanding Quicker than-Physics can Explain

The Universe is expanding much quicker than it should be according to recognized laws of physics, a collaboration of American and Australian astronomers has establish.
Using the Hubble Space Telescope, the team perform the most precise measurement ever of how quick distant galaxies are flying away from us, and establish it’s about 8% faster than our best predictions dictate.
The inconsistency could mean that dark power, the mysterious force that’s accelerating the growth of the Universe, is rising in strength. Or, it could indicate of an exotic latest particle that gave the Universe a kick in its early days“A funny universe presently got funnier,” said Brad Tucker, an Australian National University astronomer & co-author of the work, which can be found on Arxiv and will come into view in The Astrophysical Journal.
So is it time to meet your physics books into a small pile and strike a match?
The plan that the Universe is expanding isn’t a latest one. Edwin Hubble uncovered that fact in the 1930s.
But in the 1990s, things got still weirder. Physicists exposed that that expansion was accelerating – and whatever’s driving that stepping up, so-called dark energy, is the major ingredient of the Universe.
Now, scientists have establish that even that acceleration is faster than predictable, and it could mean that the Universe is gearing up to tear itself separately in the so-called Big Rip.
In the new work, researchers led by Adam Riess, who public the 2011 Nobel Prize for discovering dark energy, used the light of 2 kinds of star to clock the speed of 18 galaxies.
For 2 and a half years the team used the Hubble Space Telescope to check the brightness of 2,400 Cepheid star and about 300 Type Ia supernovae within these galaxies.
Astronomers use these astronomical objects as reserve marker in the cosmos because they each have well-known luminosity (or intrinsic brightness). That brightness decreases unsurprisingly the further absent they are from Earth – a bit like gauge the distance to a town from the brightness of its streetlights.
The astronomers also measure the pace of its movement with Doppler shift. Wavelengths of light can be stretched and dense depending on relative motion – police radar scanners use the Doppler result to pinpoint a transitory car’s speed.
Reiss and colleagues intended the expansion rate of the space (known as the Hubble constant) by look at how the speed of galaxies and their space from us are related.One option is that dark energy, already known to be accelerate the Universe, may be growing stronger – pushing galaxies away from every other with ever better force. In other words, that the speeding up of the Universe is itself accelerating.
Alternately, the Universe’s growth rate may have been given a kick in the history through the action of a before undocumented subatomic particle whizzing through the early on cosmos at close to the speed of light. One applicant for this particle is dark radiation, which is like the dark substance version of the photon.
There is, of course, a third option: that these distance measurements may not be as consistent as we think.

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