Galaxies

Category archives for Galaxies

“There is no such thing as perpetual tranquillity of mind while we live here; because life itself is but motion, and can never be without desire, nor without fear, no more than without sense.” -Thomas Hobbes It’s hard to believe, but despite being at rest here on the surface of Earth, we’re actually hurtling through…

“Not all chemicals are bad. Without chemicals such as hydrogen and oxygen, for example, there would be no way to make water, a vital ingredient in beer.” -Dave Barry When we break out the big guns — space telescopes like Hubble or James Webb — we can see the Universe as it was billions of…

“No matter what technique you use, you should get the same value for the expansion rate of the universe today.” -Ben Hoscheit When you think of the Universe on the largest scales, you likely think of galaxies grouped and clustered together in huge, massive collections, separated by enormous cosmic voids. But there’s another kind of…

“Unless one says goodbye to what one loves, and unless one travels to completely new territories, one can expect merely a long wearing away of oneself and an eventual extinction.” -Jean Dubuffet In the far future, all the galaxies within our Local Group will merge together, with enough gas and stellar material to form trillions…

“Despite its name, the big bang theory is not really a theory of a bang at all. It is really only a theory of the aftermath of a bang.” -Alan Guth When we look to the deepest reaches of space, we can look for the “first” of any type of object. The first galaxy, the first…

“There is always a heavy demand for fresh mediocrity. In every generation the least cultivated taste has the largest appetite.” -Paul Gauguin From our vantage point within the Milky Way, it sure does appear impressive. Hundreds of billions of stars shine in our own cosmic backyard, with our galaxy spanning a whopping 100,000 light years…

“We’ve taken a major step back in time, beyond what we’d ever expected to be able to do with Hubble. We see GN-z11 at a time when the universe was only three percent of its current age.” -Pascal Oesch Arriving at our eyes after a journey of 13.4 billion years, the light from galaxy GN-z11…

“Things need not have happened to be true. Tales and adventures are the shadow truths that will endure when mere facts are dust and ashes and forgotten.” -Neil Gaiman Wherever we look in the night sky, we don’t just observe the background sources of light shining our way, but also the effects of all the…

“On a cosmic scale, our life is insignificant, yet this brief period when we appear in the world is the time in which all meaningful questions arise.” -Paul Ricoeur When it comes to the largest bound cosmic structures, it doesn’t get any bigger than galaxy clusters. Unless, that it, you consider when multiple galaxy clusters…

“The history of astronomy is a history of receding horizons.” -Edwin Hubble As you look to greater and greater distances, you’re looking back in time in the Universe. But thanks to dark energy, what we can see and access today isn’t always going to be accessible. As galaxies grow more distant with the accelerated expansion…