Astronomy
esiegel | May 27, 2013"Yes, indeed, if humankind — from humble farmers in the fields and toiling workers in the cities to teachers, people of independent means, those who have reached the pinnacle of fame or fortune, even the most frivolous of society women — if they knew what profound inner pleasure await those who gaze at the heavens, then France, nay, the whole of Europe, would be covered with telescopes instead of bayonets, thereby promoting universal happiness and peace." -Camille Flammarion
Welcome back to Messier Monday here on Starts With A Bang, where each Monday we take a detailed look at one of the 110…
esiegel | May 24, 2013"Do you see the absurdity of what I am? I can't even express these things properly because I have to - I have to conceptualize complex ideas in this stupid limiting spoken language! But I know I want to reach out with something other than these prehensile paws! And feel the wind of a supernova flowing over me!" -Ronald Moore
Well, you probably don't actually want to feel the wind of a supernova flowing over you; trust me on this.
Image credit: ESO / L. Calçada, of the remnant of SN 1987a.
But to find one for yourself, that's definitely within your reach, if you know where to look.…
esiegel | May 20, 2013“The Milky Way is nothing else but a mass of innumerable stars planted together in clusters.” -Galileo Galilei
Welcome back to another Messier Monday here on Starts With a Bang! With 110 deep-sky objects making it up, the Messier Catalogue is the first comprehensive, accurate catalogue of faint (but not too faint) fixtures in the night sky. Each object tells its own unique tale, and is visible to amateur and professional skywatchers alike with even the simplest of equipment. Many of these objects were discovered by Charles Messier himself (or his assistant, Pierre Méchain), while others go…
esiegel | May 17, 2013"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 theory of Newtonian Gravity that had ruled the cosmos for nearly two-and-a-half centuries -- gets challenged by a newcomer.
Image credit: Brooks/Cole - Thomson publishing, 2005.
And yet, that's exactly what Einstein did when he proposed General Relativity at the…
esiegel | May 13, 2013"How is it they live for eons in such harmony - the billions of stars - when most men can barely go a minute without declaring war in their mind against someone they know?" -Thomas Aquinas
Welcome back to another Messier Monday here on Starts With a Bang! Each Monday, we take an in-depth look at one of the 110 deep-sky wonders -- all visible with a small telescope or even good binoculars -- that make up Charles Messier's original catalogue of non-cometary objects! Today, we're taking a look at a one-of-a-kind galaxy among the Messier objects, which just happens to be the (co-)first galaxy I…
esiegel | May 8, 2013"No valid plans for the future can be made by those who have no capacity for living now." -Alan Watts
"They do not see what lies ahead, when Sun has faded and Moon is dead." -J.R.R. Tolkien
One of the most amazing facts about the Universe is that, despite only having spent a few hundred years studying the fundamental constituents and forces of what makes us up, humanity has been able to accurately figure out just what all this actually is.
Image credit: ESO / S. Brunier.
The laws of nature are almost completely understood in a few, very important senses. We know that our Universe is about…
esiegel | May 6, 2013"Why I came here, I know not; where I shall go it is useless to inquire - in the midst of myriads of the living and the dead worlds, stars, systems, infinity, why should I be anxious about an atom?" -Lord Byron
Welcome back to another Messier Monday here on Starts With a Bang! Messier's 18th-Century catalogue of 110 deep-sky objects that could potentially be confused with comets by skywatchers has endured as one of the greatest collections of deep-sky objects clearly visible to amateur and professional astronomers worldwide!
Image credit: ScienceSouth - Tony's Astronomy Corner, via http://…
esiegel | May 1, 2013"The views of space and time which I wish to lay before you have sprung from the soil of experimental physics, and therein lies their strength. They are radical. Henceforth space by itself, and time by itself, are doomed to fade away into mere shadows, and only a kind of union of the two will preserve an independent reality." -Hermann Minkowski
When it comes to gravity, you probably think you understand it pretty well.
Image credit: Heavens Above, via http://heavens-above.com/.
Everything with mass (or energy) attracts everything else with mass-or-energy, explaining everything from falling…
esiegel | April 29, 2013"The fault, dear Brutus, is not in our stars,
But in ourselves, that we are underlings." -W. Shakespeare
Welcome to just another Messier Monday here on Starts With A Bang! Each Monday, we're taking a detailed look at a different one of the 110 deep-sky objects that compose the Messier Catalogue, each one a different semi-permanent wonder of the night sky for our viewing pleasure here on Earth.
Image credit: Alistair Symon, 2005-2009.
While we may not think of our galaxy as a hotbed of star formation -- and indeed it isn't compared to many, as it forms less than one Sun-like star per year…
esiegel | April 28, 2013"For I dipped into the Future,
far as human eye could see;
saw the vision of the world,
and all the wonder that would be." -Alfred, Lord Tennyson
This weekend, the Sun is shining here in Portland, as we've gotten our first annual spell of warm, sunny days recently. It's got me thinking of the approaching summer, and one of my favorite music festivals that's coming up. One of the great groups I'm looking forward to is Keller and the Keels, who have an unparalleled penchant for amazing bluegrass mashups, such as their rendition of two very different songs by Beck/The Grateful Dead artistically…
esiegel | April 24, 2013"Space is big. You just won't believe how vastly, hugely, mind- bogglingly big it is. I mean, you may think it's a long way down the road to the chemist's, but that's just peanuts to space." -Douglas Adams
Well, maybe "peanuts" isn't going to do. When you look out at the night sky, all sorts of objects are yours to discover, from our closest neighbors in the Solar System to the billions of stars in the Milky Way to the faint, extended and fuzzy galaxies stretching millions and billions of light years across the cosmos.
Image credit: Stephane Guisard, via http://sguisard.astrosurf.com/.
But…
esiegel | April 22, 2013"[T]he entire globe will soon be wrapped in a glowing envelope through which none of the magic of the Universe can be seen by the naked eye." -George Eslinger
Welcome to still another Messier Monday here on Starts With A Bang! Each Monday, we highlight a different one of the 110 deep-sky objects that make up the Messier Catalogue, the first accurate catalogue of more than 100 extended, deep-sky wonders strewn across the expansive night sky!
Image credit: ScienceSouth -- Tony's Astronomy Corner.
Tonight, the Moon is nearly full, which means the largest natural source of light pollution at…
esiegel | April 15, 2013"Upon one occasion, while engaged upon a seven-foot mirror, he did not remove his hands from it for 16 hours together." -from Caroline Herschel's obituary
Welcome to another Messier Monday here on Starts With A Bang! Each Monday, we highlight a different one of the 110 deep-sky objects that Messier catalogued so that comet-hunters wouldn't confuse these permanent fixtures with transient comets. But each object has a unique, remarkable story in its own right.
Image credit: The Messier Objects by Alistair Symon, from 2005-2009.
Out of the 110 objects, a full forty of them are galaxies…
esiegel | April 10, 2013"A cosmic mystery of immense proportions, once seemingly on the verge of solution, has deepened and left astronomers and astrophysicists more baffled than ever. The crux... is that the vast majority of the mass of the universe seems to be missing." -William J. Broad
Three classic observations -- the Hubble expansion of the Universe, the leftover cosmic microwave background radiation, and the observed abundance of the light elements -- lead us inevitably to modeling our Universe as having begun in a hot, dense state from which it expanded and cooled. There is no other explanation that agrees…
esiegel | April 8, 2013"The light which puts out our eyes is darkness to us. Only that day dawns to which we are awake. There is more day to dawn. The sun is but a morning star." -Henry David Thoreau
Welcome to another Messier Monday here on Starts With A Bang! Each week, we take a look at the 110 deep-sky objects that comprise the Messier catalogue, the first comprehensive catalogue of fixed, deep-sky objects that could possibly be confused for potential brightening comets.
Image credit: Giacomo Bongiorno of Le Meraviglie del Cielo.
Today, to mark our hitting the quarter-century mark in looking at these nebulae…
esiegel | April 5, 2013"If you want to build a ship, don't drum up people to collect wood and don't assign them tasks and work, but rather teach them to long for the endless immensity of the sea." -Antoine de Saint-Exupery
The Universe has been around for a long time: 13.8 billion years, to be precise. As humans, we're relatively young, and our species has only been around for the last couple of hundred thousand years of it. For nearly all of human history, this is what the night skies have looked like.
Image credit: The Milky Way, by Stephane Guisard.
When the Moon isn't out and you're in a place that's…
esiegel | April 3, 2013"On what can we now place our hopes of solving the many riddles which still exist as to the origin and composition of cosmic rays?" -Victor Francis Hess
We've come a tremendously long way in our understanding of the Universe, but there are plenty of mysteries still to be revealed. Way back in the late 1800s, we noticed that there was an unaccounted-for excess in the amount of ionization in the upper atmosphere, something that our Sun and Earth, by themselves, couldn't explain.
Victor Francis Hess -- the originator of the quote atop -- decided to go see for himself, and conducted a series of…
esiegel | April 1, 2013"It is the highest form of self-respect to admit our errors and mistakes and make amends for them. To make a mistake is only an error in judgment, but to adhere to it when it is discovered shows infirmity of character." -Dale Turner
This April Fools' day, even though the rest of the internet revels in trickery, happens to fall on a Monday. Over here at Starts With A Bang, that means it's time for Messier Monday, an in-depth look at one of the 110 deep-sky objects catalogued by Charles Messier in the 18th Century to help comet-hunters avoid confusion. Today, the catalogue boasts 107…
esiegel | March 29, 2013“If the Universe Is Teeming with Aliens… Where Is Everybody?” -Stephen Webb
It's one of the biggest conundrums in the Universe, known as the Fermi Paradox: if the Universe is so conducive to life, and if there are so many opportunities for it within our galaxy alone, why isn't there any evidence (outside of the History Channel) of extraterrestrial life?
Image credit: Peter Essick, via National Geographic.
Moreover, why haven't we been visited by some extraterrestrial intelligence? After all, given the fact that our Universe is nearly 14 billion years old, while our galaxy itself is only a…
esiegel | March 27, 2013"The radiation left over from the Big Bang is the same as that in your microwave oven but very much less powerful. It would heat your pizza only to -271.3°C, not much good for defrosting the pizza, let alone cooking it." -Stephen Hawking
One of the most powerful predictions of the Big Bang -- the fact that our cold, star-and-galaxy-rich, slowly-expanding Universe came from a hot, dense, much more homogeneous state -- was the existence of a bath of leftover radiation that should be detectable, even today.
Image credit: Pearson / Addison Wesley, retrieved from Jill Bechtold.
Back when the…