Galaxies

Category archives for Galaxies

“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…

“It’s the gravity that shapes the large scale structure of the universe, even though it is the weakest of four categories of forces.” -Stephen Hawking Galaxies don’t just exist in isolation in our Universe, but are often found bound together as a part of even grander structures. Our own Milky Way is bound in a…

“The problem is, you’re trying to find these really faint things, but you’re looking behind these really bright things. The brightest galaxies in the universe are in clusters, and those cluster galaxies are blocking the background galaxies we’re trying to observe.” -Rachael Livermore One of the biggest puzzles in science is exactly how the Universe…

“For the first time we can learn about individual stars from near the beginning of time. There are surely many more out there.” -Neil Gehrels We’ve come incredibly far in our quest to learn how the Universe came to be the way it is today. We can see out in space for tens of billions…

“For the first time, astronomers have outlined and named the network of galaxies that includes the Milky Way, adding a line to our cosmic address and further defining our place in the universe.” -Douglas Quenqua There’s been a longstanding puzzle in astrophysics that’s finally coming to a head. For nearly a century, we’ve known that…