Telescopes...Telescopes have always been one of the most greatest friends.And when it comes to Telescopes the first thing that comes to one's mind is "The Hubble Space Telescope ".
The Hubble Space Telescope is a space telescope that was launched into low Earth orbit in 1990, and remains in operation. With a 2.4-meter mirror, Hubble's four main instruments observe in the near ultraviolet, visible, and near infrared spectra.(A bit of Wikipedia Stuff)...
When scientists came across The Big Bang Theory they had this big idea of Expanding Universe.According to this idea,Scientists predicted that our universe is still growing bigger and bigger.All the celestial bodies-the stars from the constellation and the galaxies are still moving apart from each others.Some famous constellations that are still seen from the religious point of view would not be the same like they are today.Rather The Big Dipper from 10 thousand years from now would look more like a Ladies Heel Sandals.
The Hubble Space Telescope is a space telescope that was launched into low Earth orbit in 1990, and remains in operation. With a 2.4-meter mirror, Hubble's four main instruments observe in the near ultraviolet, visible, and near infrared spectra.(A bit of Wikipedia Stuff)...
Advancements of Hubble Telescope |
When scientists came across The Big Bang Theory they had this big idea of Expanding Universe.According to this idea,Scientists predicted that our universe is still growing bigger and bigger.All the celestial bodies-the stars from the constellation and the galaxies are still moving apart from each others.Some famous constellations that are still seen from the religious point of view would not be the same like they are today.Rather The Big Dipper from 10 thousand years from now would look more like a Ladies Heel Sandals.
Constellations-Then and Now |
Edwin Hubble with his telescopic obseervations confirmed these predictions and finally in 1929 wrote his observations in 'expansion del universo'.This was a revolutionary discovery and he was awarded as Legion of Merit for outstanding contribution to ballistics research in 1946.
In a new study, a team of researchers led by Adam Riess of the Space Telescope Science Institute in Baltimore, report that they've calculated how fast the universe is expanding to a greater degree of accuracy than ever before, shrinking the error bars on their measurements by about 30 percent.
Hubble telescope measures the universe
The improved accuracy comes thanks to the Wide Field Camera 3 on theHubble Space Telescope. It's a new instrument that was only installed on the orbiting observatory in 2009, during NASA's last space shuttle mission to upgrade the space telescope.
"Without the improvement in efficiency capability from the new camera, it just wouldn’t have been feasible," Riess told SPACE.com Monday (March 14). "It's just a different generation of technology than the previous camera."
From Big Bang to Expanding Universe |
The researchers used the new camera to observe a special class of exploding stars called type 1a supernovas, which are useful because they always release the same amount of light. Astronomers compare this intrinsic brightness to their measured brightness — which varies depending on how far away from Earth they are — to judge cosmic distances.
The new measurements confirm astronomers' growing consensus that the universe is not only expanding like a balloon, but picking up speed in doing so.
Based on our current laws of gravity —namely, Einstein's theory of general relativity — that's unexpected. To explain this surprising reality, scientists came up with dark energy, which would counteract the force of gravity that tries to pull the universe inward. But to date, dark energy has remained undetectable to astronomers.
Image of galaxy taken by Hubble telescope |
Okay...In between 2nd paragraph,as some of you'all must be thinking as i mentioned that the big dipper and other constellations which are related to Mythological stories were not like the same earlier....What?Yea well that's a topic for some other day...and also the dark energy,thaƱx for reading.
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