Monday, January 14, 2013

The Largest Known Structure in the Universe

Map showing Huge LQG in dots
This month, a team of astronomers in England published the discovery of a clump of active galactic cores that stretches 4 billion light-years from end to end. Dubbed as The Huge LQG (large quasar group), it is composed of 73 luminous quasars

To help us to put this into perspective, we can us start with taking the distance between Manila and New York in mind, by plane if in a Boeing 707 and maintained an average cruise speed its takes 19.4 hours, but with the speed of light that same distance would only take a fraction of a second - approximately 0.046 seconds, the Sun and Earth in light speed is 8 minutes apart, then the distance across the milky way 100,000 light years. But with this new super structure, light will take 4 billion years to travel across it. Truly astronomical in the most literal meaning of the word. This new discovery goes against the existing Cosmological Principle that predict a homogeneous universe and that this type structure is not supposed to exist

Prior to this discovery, The Sloan Great Wall, a wall of galaxies that stretches 1.38 billion light years forming giant wall of galaxies, was considered the largest structure in the universe, so let us see what is next for us out there.


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