Dark Energy

Category archives for Dark Energy

“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…

The status of the Universe: 2015 (Synopsis)

“People are trapped in history and history is trapped in them.” -James A. Baldwin We’ve come a long way since we first started watching the night skies. Even just a century ago, we thought our Universe was governed by Newtonian gravity and consisted only of our Milky Way and the stars inside. In the past…

“And now we welcome the new year. Full of things that have never been.” -Rainer Maria Rilke Yes, it’s true, with 2015 upon us, the new year holds a number of wonderful new things. Not only for us, but for the Universe as well! Consider all the time that’s passed, leading up to today. Consider how far…

“We are incredibly heedless in the formation of our beliefs, but find ourselves filled with an illicit passion for them when anyone proposed to rob us of their companionship.” -James Harvey Robinson The Universe seems to be full of contradictions. On one hand, everywhere we look — in all directions and at all locations —…

Memory Monday: Our Universe Changes (Synopsis)

“Our feeblest contemplations of the Cosmos stir us — there is a tingling in the spine, a catch in the voice, a faint sensation, as if a distant memory, of falling from a height. We know we are approaching the greatest of mysteries.” -Carl Sagan 34 years ago, Carl Sagan became the first person to present —…

“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 Sure, it’s…

“I must choose between despair and Energy —— I choose the latter.” -John Keats Yes, we know that the fabric of the Universe is not made up of space and time but rather a unified spacetime; that the spacetime isn’t static but rather expands as the Universe goes on; and that the expansion isn’t slowing…

“The mind, once expanded to the dimensions of larger ideas, never returns to its original size.” -Oliver Wendell Holmes But it isn’t just your mind that expands as time goes on and you increase your knowledge, but the entire Universe as well. General Relativity, as it turns out, doesn’t leave us with much of a…

Ask Ethan #53: What is the Big Rip? (Synopsis)

“Why do people have to be this lonely? What’s the point of it all? Millions of people in this world, all of them yearning, looking to others to satisfy them, yet isolating themselves. Why? Was the earth put here just to nourish human loneliness?” -Haruki Murakami Of all the ways our Universe can end —…