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"It is by going down into the abyss that we recover the treasures of life. Where you stumble, there lies your treasure." -Joseph Campbell
It took Charles Messier and his assistant, Pierre Méchain, a lifetime to scan and survey the sky for all the permanent deep-sky objects visible in their telescopes that could possibly be confused for comets on first class. More than 200 years later, these 110 deep-sky objects are among the best seen and most wondrous sights of the Universe, accessible to anyone with a decent telescope and dark skies. This Messier Monday, let's look the farthest into the…
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"Let us leave this place where the smoke blows black
And the dark street winds and bends.
Past the pits where the asphalt flowers grow
We shall walk with a walk that is measured and slow,
And watch where the chalk-white arrows go
To the place where the sidewalk ends." -Shel Silverstein
No, there's not really an edge to our world, but if you've ever been to the ocean shores, you might know that feeling I'm talking about. The smell of the salt water, the wind gusting in from the sea, the sandy beaches and rocky outcrops slowly losing ground to the relentless waves; it's one of the most…
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"I have an existential map. It has 'You are here' written all over it." -Steven Wright
So just because the Ask Ethan series is becoming way more popular than I can handle -- I've got more than 200 questions that I'm sitting on by now -- doesn't mean you should stop sending your questions! There are some really good ones, and today's comes from Robert Plotner, who asks:
When maps of the CMB are depicted, they are shown as a flattened ovoid. How does this correlate to our view of the sky which is a sphere? For example, a global map of the Earth is either distorted to show it in two dimensions…
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Farnsworth: "There is it. The edge of the Universe!"
Fry: "Far out. So there's an infinite number of parallel Universes?"
Farnsworth: "No, just the two."
Fry: "Oh, well, I'm sure that's enough."
Bender: "I'm sick of parallel Bender lording his cowboy hat over me!" -Futurama
Our existence here in this Universe is something that we know is rare, special, beautiful, and full of wonder.
Image credit: Kelly Montgomery.
Some things happen with amazing regularity and predictability: the occurrence of days-and-nights, the tides, the seasons, the motion of the heavenly bodies, and so much more. The…
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"I would rather have one article a day of this sort; and these ten or twenty lines might readily represent a whole day's hard work in the way of concentrated, intense thinking and revision, polish of style, weighing of words." -Joseph Pulitzer
When it comes to the Messier objects, though, it isn't words that get concentrated; its collections of stars, gas, dust and more! So welcome to another edition of Messier Monday, where we take an in-depth look at one of the 110 deep-sky objects that make up the Messier catalogue. Some of these objects are only a few light-years wide,…
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Note: This post has been updated and improved as of 2014 here, at the new Starts With A Bang blog. What follows, below, is the original version that was first published here.
"I love the sounds and the power of pounding water, whether it is the waves or a waterfall." -Mike May
The world's oceans have always been special to me, and bodies of water in general. The air smells different, the wind blows cool, and you're reminded of the power of the salty seas every time you step in. It's one of the reasons that the old sea shanties have always fascinated me. This week, have a listen to an updated…
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"Observations indicate that the universe is expanding at an ever increasing rate. It will expand forever, getting emptier and darker." -Stephen Hawking
Today's Ask Ethan comes to us via our question/suggestion box from reader MIUFish, who asks:
I read something recently about some people who were doing work looking at the possibility that the mass of things has been decreasing, as an alternate explanation - or, perhaps, interpretation - to some of the questions regarding the expansion of the universe and so on.
Is there any seriousness to this? Do you know anything about it?
Here's…
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"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
It was in the 1930s, looking at dense clusters of galaxies (like Coma, below), that Fritz Zwicky first noticed that the mass in the Universe didn't add up.
Image credit: Adam Block / Mount Lemmon SkyCenter / University of Arizona.
We knew how gravity worked, so it was pretty straightforward -- based on how the galaxies within…
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"Now, this is not the end. It is not even the beginning of the end. But it is, perhaps, the end of the beginning." -Winston Churchill
To kick off every week for nearly a year now, we've begun it with Messier Monday, where we take an in-depth look at the 110 deep-sky objects that make up the first elaborate catalogue of fixed night-sky wonders that could possibly be confused for transient comets. Originally, when first published, this catalogue was made up of 103 objects; the final 7 were added posthumously. Each one tells its own unique story, yet all of them tell a sliver of our own…
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"Why should people go out and pay money to see bad films when they can stay at home and see bad television for nothing?" -Samuel Goldwyn
There are few experiences that we can share together -- no matter the great distances in space or time -- like a good movie. Encapsulating a great variety of aspects of the human experience in just a couple of hours, a movie can take us to places we've never been and inside the minds of people we've never known, as Janove Ottesen reminds us in his song,
Black And White Movie.
This weekend, I'd like to highlight for you three of my favorite fake film…
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"The great oak of Astronomy has been felled, and we are lost without its shadow." -Subrahmanyan Chandrasekhar, on the passing of Jan Oort
In our new semi-regular series, readers from all over the world (and in low-Earth orbit, too, because why not!) are invited to send in their questions and suggestions for a chance to have them answered here on this blog! Today, our question comes from Robert Meegan, who asks,
Have any Oort Cloud objects been detected in situ, as opposed to when they whipped through the inner solar system as comets? I would presume that any detection would…
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"Like all animals, human beings have always taken what they want from nature. But we are the rogue species. We are unique in our ability to use resources on a scale and at a speed that our fellow species can't." -Edward Burtynsky
It's really a romantic notion when you think about it: the heavens, the Milky Way, is lined with hundreds of billions of stars, each with their own unique and varied solar systems.
Image credit: 湖北直行便 of AstroArts, via http://www.astroarts.jp/photo-gallery/photo/13870.html.
But beyond that -- in addition to the stars -- there are hundreds of billions of planets…
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"Being born in a duck yard does not matter, if only you are hatched from a swan's egg." -Hans Christian Anderson
Welcome back for another Messier Monday! There are 110 deep-sky objects in the Messier catalogue, some of the most prominent night-sky fixtures, as seen from Earth, running the gamut of astronomical phenomena from within our galaxy and beyond. Each week, we pick a new one to place under the spotlight, examining what it is, what we know about it, and how to find it, among other spectacular facts.
Image credit: Rolando Ligustri, taken over many years, retrieved from http://www.…
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“Some days you go bear hunting and you get eaten. Some days you come home with a nice rug to roll around on, and bear steaks. What they don't tell you as a kid is that sometimes you get the rug and steaks, but you also get some nice scars to go with them. ...once you realize what can go wrong, it's a lot scarier to go hunting 'bears'.” -Laurell K. Hamilton
Some of the most incredible stories in all of human experience come from struggles against nature. One of the greatest storytellers in all of music, Slaid Cleaves, sings an incredibly (and tragically, like all of his songs) memorable…
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"Education is an admirable thing, but it is well to remember from time to time that nothing worth knowing can be taught." -Oscar Wilde
As many of you know, last weekend I launched a suggestion box here on the site, and I've been overwhelmed by the response: about fifty of you have sent something in to me in the first less-than-a-week of this alone!
Image credit: Thao Nelson of http://mycredo.wordpress.com/.
So, let's start answering them! There are more than enough excellent questions and suggestions to keep me busy for a long time, but with the new academic year starting up, one of…
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"One sees qualities at a distance and defects at close range." -Victor Hugo
A couple of weeks ago we took a look at the most distant galaxy (so far) in the known Universe, a galaxy so far away that it takes exclusively infrared observations from our most power space telescopes (Hubble and Spitzer) in order to detect it. What's perhaps even more remarkable is that the light we do detect from it -- the light we detected in the infrared -- was actually emitted in the Ultraviolet part of the spectrum!
Image credit: NASA, ESA, Garth Illingworth (University of California, Santa Cruz) and…
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"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, the Messier Catalogue provides skywatchers across the globe with a number of spectacular targets, from nearby nebulae and clusters to spectacular, distant galaxies. Each Monday, we spotlight a new one right here.
Image credit: Rolando Ligustri,…
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"I want to give the audience a hint of a scene. No more than that. Give them too much and they won't contribute anything themselves. Give them just a suggestion and you get them working with you. That's what gives the theater meaning: when it becomes a social act." -Orson Welles
It's like that for all forms of storytelling, including the science I write about here. Some of the best conversations happen not because I know something amazing that I want to share with you, but because there's something you want to know about, and I know something that can help you get to where you…
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"Being told about the effects of climate change is an appeal to our reason and to our desire to bring about change. But to see that Africans are the hardest hit by climate change, even though they generate almost no greenhouse gas, is a glaring injustice, which also triggers anger and outrage over those who seek to ignore it." -Sigmar Gabriel
With all of the scientific issues subject to politicization in this world, there's arguably none that raises such strong emotions as the issue of global warming and climate change. This is the final installment of a three-part series on how one could…
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"We make the world we live in and shape our own environment." -Orison Swett Marden
If you had never heard of global warming before, how would you figure out whether it's real or not? And if it is real, how would you figure out what humanity's role in it is? To answer this, I've decided to do a three-part series on how you'd go about figuring this out, putting aside all politics, economics, opinion and any other non-scientific factors. If you missed part 1, you can check it out here; today we're going to build on that and talk about what determines the temperature of a planet with an…