Ask Ethan #12: How far is the distant Universe?

“Light thinks it travels faster than anything but it is wrong. No matter how fast light travels, it finds the darkness has always got there first, and is waiting for it.” –Terry Pratchett It’s the end of the week once again, and so let’s have a go at another Ask Ethan! Perhaps inspired by a great … Read moreAsk Ethan #12: How far is the distant Universe?

Messier Monday: Andromeda, the Object that Opened Up the Universe, M31

“We find them smaller and fainter, in constantly increasing numbers, and we know that we are reaching into space, farther and farther, until, with the faintest nebulae that can be detected with the greatest telescopes, we arrive at the frontier of the known universe.” –Edwin Powell Hubble With 110 deep-sky objects scattered throughout the heavens, … Read moreMessier Monday: Andromeda, the Object that Opened Up the Universe, M31

"Einstein's Greatest Blunder" was REALLY a blunder!

“Anyone who has never made a mistake has never tried anything new.” –Albert Einstein Back when Einstein first proposed his theory of General Relativity, his revolutionary picture of the Universe was met with a mix of curiosity, awe, and intense skepticism. It isn’t every day that your most cherished of all physical theories — the … Read more"Einstein's Greatest Blunder" was REALLY a blunder!

How Big is Our Observable Universe?

“The mind, once expanded to the dimensions of larger ideas, never returns to its original size.” –Oliver Wendell Holmes When General Relativity supplanted Newton’s work as our theory of how gravity works in the Universe, it didn’t just change how we view how masses attract, it gave us a new understanding of what the questions where … Read moreHow Big is Our Observable Universe?