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Scientific research interest in mysterious dark energy heightens due to new evidences
Some recent results from the Hubble space telescope indicate that dark energy has been present for at least 9 billion years during the period preceding cosmic acceleration.
Also, with the help of NASA's Chandra X-Ray Observatory instruments and data collected to weigh distant galaxy clusters, astronomers have found that there seems to be some mystery force that was speeding up the expansion of the universe

These results made cosmologists and astronomers to hypothesize the existence of mysterious dark energy- an unknown form of energy that supposedly permeates all of space and is tending to accelerate the expansion of the universe.

Currently, dark energy is the most accepted hypothesis by cosmologists to explain the observations that the universe is expanding at an accelerating rate as indicated Hubble space telescope and data from other studies. Earlier, the calculations of expansion were done through red-shift measurements.

With the hypothesis of dark energy, extremely high-precision measurements of the expansion of the universe are required to understand how the expansion rate changes over time and space but such a device and technology is not available yet. Because of this, theoretical cosmologists are trying to formulate measuring the equation of state for dark energy and it is one of the biggest efforts in observational cosmology today.

The data collected so far and its interpretation has suggested that Dark energy is very homogeneous that interact with gravity only. It is quite rarefied- roughly 10-27 kg/m3 - it is unlikely to be detectable in laboratory experiments.

However, research interest in the area of Dark energy has heightened believed to be filling about 68% of otherwise empty space with a negative pressure. Perhaps, the way new evidences are being thrown up by data being collected by advanced telescopes and technologies helping to measure some parameters indirectly with more precision we will get a better and clearer picture of the universe.

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