esiegel | February 10, 2013"To run away from trouble is a form of cowardice and, while it is true that the suicide braves death, he does it not for some noble object but to escape some ill." -Aristotle
"I think suicide is sort of like cancer was 50 years ago. People don't want to talk about it, they don't want to know about it. People are frightened of it, and they don't understand, when actually these issues are medically treatable." -Judy Collins
The fall of 2007 wasn't so long ago; maybe you can remember where you were clearly for yourself. For me, I had recently finished graduate school, had even more recently met…
esiegel | February 8, 2013"Night, when words fade and things come alive. When the destructive analysis of day is done, and all that is truly important becomes whole and sound again." -Antoine de Saint-Exupery
When you look out into the Universe, what is it that you typically think of? Do you think of reliable, fixed stars and constellations? The vast expanse of the Milky Way, with its memorable dust lanes and amorphous shapes?
Image credit: Wally Pacholka of http://www.astropics.com/.
The unchanging nature of the points of light in the sky?
Image credit: Roth Ritter (Dark Atmospheres), of the double cluster in…
esiegel | February 6, 2013"According to the special theory of relativity nothing can travel faster than light, so that if light cannot escape, nothing else can either. The result would be a black hole: a region of space-time from which it is not possible to escape to infinity." -Stephen Hawking
You may have encountered objects that are the same size as one another, but have very different masses.
Image credit: Basic Science Supplies / © Accelerate Media.
This is because they're made out of different elements. The higher you go in the periodic table, the larger and more massive your individual atoms are, and so…
esiegel | February 4, 2013"The thing's hollow—it goes on forever—and—oh my God—it's full of stars!" -Dave Bowman, 2001: A Space Odyssey
Back in October, we began a new, weekly series here called Messier Monday. Each Monday, we've taken a look at one of the 110 deep-sky objects that make up the Messier Catalogue, nebulous objects that might potentially be confused with comets by unaware comet-hunters.
Image credit: Lee Kelvin and Grant Miller, via http://star-www.st-and.ac.uk/~lsk9/.
These objects include stellar remnants, star-forming nebulae, young star clusters, ancient globular clusters, and distant galaxies far…
esiegel | February 2, 2013"Get your facts first, then you can distort them as you please." -Mark Twain
I am unimpressed with speculations that have no basis in fact, but if you can show how your claims are factually grounded and arrived at, they're certainly worth a listen to. And if your facts, logic and extrapolations are sound, you might even, as Sarah Jarosz sings,
Tell Me True.
Of course, if they're a little suspect instead, you can either lead people astray, or alternatively, create some of the best humor and satire ever created.
This weekend, I proudly introduce to you a series of nature videos by YouTube user…
esiegel | February 1, 2013“It surprises me how disinterested we are today about things like physics, space, the universe and philosophy of our existence, our purpose, our final destination. It’s a crazy world out there. Be curious.” -Stephen Hawking
One of the most existential questions humanity has ever asked is the question of our origins: where do I come from? Inspired by Ben Kilminster's writings, here's the entire history of the Universe -- that's led up to the existence of you -- in just 10 sentences*.
Image credit: Amber Stuver of http://www.livingligo.org/.
1.) At some point in the distant past**, the…
esiegel | January 30, 2013"Concentrate all your thoughts upon the work at hand. The sun's rays do not burn until brought to a focus." -Alexander Graham Bell
Imagine a beautiful, clear day. The Sun is shining, the skies are clear, and you couldn't ask for a nicer day.
Image credit: © 2012 Free HD wallpapers.
All of a sudden, the Sun itself appears to brighten, just for a brief amount of time, like it released an extra burst of energy. That night, some 17 hours later, the most spectacular auroral display ever brightens the night in a way you never imagined.
Image credit: Jónína Óskarsdóttir.
Workers across the…
esiegel | January 28, 2013"A wise old owl lived in an oak
The more he saw the less he spoke
The less he spoke the more he heard.
Why can’t we all be like that wise old bird?" -The Immortal Poet Bromley
To your naked eye, the night sky appears littered with thousands of individual points of light: the stars and planets so familiar to us. But through even a small telescope or a pair of binoculars, not only do the number of visible stars increase into the hundreds-of-thousands or even the millions, but a slew of deep-sky objects become visible to us as well. Each monday, we highlight one of the deep-sky objects from…
esiegel | January 27, 2013"In any field, find the strangest thing and then explore it." -John Archibald Wheeler
Sometimes, things get difficult. Sometimes, there are challenges you have to face that you never even expected, much less were prepared for. And sometimes, it seems like there's no point in even holding on to hope that things will get better. But as long, as The National would tell you, as you're no
Runaway,
you've still got something worth striving for. Even if there's something newer, shinier, and more powerful than you.
Image credit: NASA / Hubble Space Telescope.
Even on Mars.
Nine years (and three…
esiegel | January 25, 2013“I asked the Zebra,
are you black with white stripes?
Or white with black stripes?
And the zebra asked me,
Are you good with bad habits?
Or are you bad with good habits?
Are you noisy with quiet times?
Or are you quiet with noisy times?
Are you happy with some sad days?
Or are you sad with some happy days?
Are you neat with some sloppy ways?
Or are you sloppy with some neat ways?
And on and on and on and on and on and on he went.
I’ll never ask a zebra about stripes...again.” -Shel Silverstein
When it comes to the classical world -- the world on a macroscopic scale -- we all feel comfortable…
esiegel | January 23, 2013“Hell must be isothermal; for otherwise the resident engineers and physical chemists (of which there must be some) could set up a heat engine to run a refrigerator to cool off a portion of their surroundings to any desired temperature.” -Henry Albert Ben
One of the most amazing ideas to come out of our observations of the Universe over the last century is that our vast, star-filled, mostly-empty Universe hasn't always been like this.
Image credit: Ricky Barnard / Fine Art America.
Today, the Universe is very cold, expanding, and the average distance between galaxies is increasing as time…
esiegel | January 21, 2013"Modern man must descend the spiral of his own absurdity to the lowest point; only then can he look beyond it." -Vaclav Havel
But the spiral is more than a metaphor or a mathematical shape, it's also the most common feature observed in the galaxies out there in the Universe. There are 27 spiral galaxies in the Messier Catalogue, and today I want to show you how to find the most southerly of them all!
Image credit: Rich Richins, of all 110 Messier objects (in no particular order). M83 boxed.
The Southern Pinwheel Galaxy, also known as Messier 83, is a full 30 degrees south of the celestial…
esiegel | January 20, 2013"Every day we should hear at least one little song, read one good poem, see one exquisite picture, and, if possible, speak a few sensible words." -Johann Wolfgang von Goethe
I don't always have all the answers, but every weekend I strive to bring you something interesting -- in some form or other -- to help remind you that whatever it is you may be most passionate about, there's a diverse world (and Universe) out there for you to discover, no matter how you look at it. And one of the best parts of that (at least for me) is music, something I try and share with you every week. The new song I'…
esiegel | January 18, 2013"The cosmos is all that is or ever was or ever will be. 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, or falling from a height. We know we are approaching the greatest of mysteries." -Carl Sagan
If you looked out at the planets in the Solar System orbiting our Sun, you'd expect that if you know where they are right now and how quickly they're moving, you can figure out exactly where they're going to be at any time-and-date arbitrarily far into the future. That's the great power that comes…
esiegel | January 16, 2013“Aristotle taught that stars are made of a different matter than the four earthly elements— a quintessence— that also happens to be what the human psyche is made of. Which is why man’s spirit corresponds to the stars. Perhaps that’s not a very scientific view, but I do like the idea that there’s a little starlight in each of us.” -Lisa Kleypas
Ah, but what if you did want the scientific view of starlight? After all, it's through the very stars themselves that we've unveiled some of the greatest secrets of the Universe.
Image (mosaic) credit: Nick Risinger.
But while the stars of the night…
esiegel | January 14, 2013"The ruins were just a reminder that what had been was no longer. That everything we are will be gone someday. That I will be forgotten." -Megan Miranda
Some four-and-a-half billion years ago, a ultra-massive cloud of cold gas and dust collapsed, giving rise to thousands of stars of all different types, from hot, massive, quick-burning blue stars down to low-mass, cool red dwarfs. And within a few hundred million years, that open star cluster dissociated, flinging the individual stars that once made it up throughout the galaxy. The lone remnant of that cluster known to us lights up our…
esiegel | January 12, 2013"Art enables us to find ourselves and lose ourselves at the same time." -Thomas Merton
Whatever your creative outlets are -- music, painting, photography, drawing, or even writing, to name a few -- I hope you get to enjoy them frequently. There's nothing like engaging your imagination and creativity, although I have to admit that I speak of this only from my own anecdotal experience, not from any scientific knowledge that I have. That's part of why each weekend I give you a song to listen to; today I give you Josh Harty's unique Roots/Americana composition,
Last Known Address.
But this…
esiegel | January 11, 2013"Every man has a right to utter what he thinks truth, and every other man has a right to knock him down for it." - Samuel Johnson
I have a six-sided die. I'm going to roll it ten times, and record each roll. And when I'm done, I'm going to have an incredibly rare, bet-you-can't-reproduce-it result!
Image credit: random.org's dice roller.
Look at that! Ten rolls of a six-sided die, and I got: 3, 2, 3, 5, 5, 5, 4, 1, 4, and 3! What a glorious, odds-defying sequence of events!
In fact, if you took a fair six-sided die and rolled it ten times, you'd have less than a 1-in-60,000,000 chance of…
esiegel | January 9, 2013"Great spirits have always encountered violent opposition from mediocre minds." -Albert Einstein
It may be hard to believe, seeing as how it's been our leading theory of gravity for nearly a century now, but Einstein's General Relativity is possibly the most frequently challenged scientific idea of all-time. Of course, it's emerged victorious from each and every one of those challenges, making a slew of unintuitive predictions that have been spectacularly confirmed each time they've been tested.
Image credit: Miloslav Druckmuller (Brno U. of Tech.), Peter Aniol, and Vojtech Rusin.
This…
esiegel | January 7, 2013"These are strange and breathless days, the dog days, when people are led to do things they are sure to be sorry for after." -Natalie Babbitt
The dog days may come at the tail end of summer, but it's the winter months that brings us the best views of the Dog Star, Sirius, the brightest star in all the night sky.
Image credit: Yuuji Kitahara.
And if you look towards the southeast in the early evening -- or towards due south around midnight -- you'll find Sirius twinkling wildly in the sky, brighter than all other stars (over three times brighter than Arcturus, the next brightest star visible…