Dark Energy

Category archives for Dark Energy

“Quintessence is a dynamic, time-evolving, and spatially dependent form of energy with negative pressure sufficient to drive the accelerating expansion […] Whereas the cosmological constant is a very specific form of energy.” -Robert Caldwell, inventor of the Big Rip scenario Our Universe began with a period of cosmic inflation: where energy intrinsic to space itself…

“If you take everything we know… it only adds up to 5% of the Universe.” -Katie Freese One of the greatest advances of the 20th century was the discovery of the vast nature of the cosmos: that it was filled with billions of galaxies, each containing billions of stars, and that it extended in all…

“Even if I stumble on to the absolute truth of any aspect of the universe, I will not realise my luck and instead will spend my life trying to find flaws in this understanding – such is the role of a scientist.” -Brian Schmidt One of the biggest surprises in our understanding of the Universe…

“Gamow was fantastic in his ideas. He was right, he was wrong. More often wrong than right. Always interesting; … and when his idea was not wrong it was not only right, it was new.” -Edward Teller Considering what we know about our Universe today, it’s hard to believe that just a century ago, Einstein’s…

“There are still so many questions to answer. When you look at any part of the universe, you have to feel humbled.” -Saul Perlmutter Discovered in 1998 from the observation of distant supernovae, dark energy determines the eventual fate of the Universe, leading to a “Big Freeze” scenario, where all the galaxies, groups and clusters that…

“What is wild cannot be bought or sold, borrowed or copied. It is. Unmistakeable, unforgettable, unshamable, elemental as earth and ice, water, fire and air, a quintessence, pure spirit, resolving into no constituents.” –Jay Griffiths When you think about the frontiers of scientific knowledge — on the border between what’s known and what’s unknown —…

“First, you should check out my house. It’s, like, kinda lame, but way less lame than, like, your house.” –Lumpy Space Princess, Adventure Time When you visualize our Universe today, you probably think about the great clumps of matter — planets, stars, galaxies and clusters — separated by huge distances. But on the largest of…

“There is no end to education. It is not that you read a book, pass an examination, and finish with education. The whole of life, from the moment you are born to the moment you die, is a process of learning.” –Jiddu Krishnamurti If you want to learn something — whether it’s abstract or concrete, solving…

“If you think this Universe is bad, you should see some of the others.” –Philip K. Dick When it comes to measuring the expansion history of the Universe, the concept is simple enough: take something you know about an object, like a mass, a size, or a brightness, then measure what the mass, size or brightness appears…

“Some say the world will end in fire, Some say in ice. From what I’ve tasted of desire I hold with those who favor fire. But if it had to perish twice, I think I know enough of hate To say that for destruction ice Is also great And would suffice.” –Robert Frost We’ve come…