I have few regrets in life, but if there’s one, it’s that I didn’t have access to all this amazing technology when I was a teenager and figuring out just how I was going to tackle my love for astronomy. How I would have loved podcasts, programmable telescopes, CCDs, websites with satellite pass information…
But that’s the way things are now, and lots of people are putting this tech to good use. Like, for example, Sirius Stargazing, a new YouTube channel with info on how to observe various astronomical objects. It’s just starting out but off to a good start. Here’s one video on the Pleiades. And who’s the dork in the tie introducing it?
If you have a YouTube account and are interested in observing the skies, then consider subscribing to Sirius Stargazing. They may just give you ideas.
Aha! The video I mentioned the other day featuring Watchmen advisor Jim Kakalios — about nerds running the planet — is now on YouTube! So I have embedded it below for those who are too busy to click an actual link.
Fractals are very interesting. There are different ways to describe one, but one way to think of one is that it’s a shape that looks the same no matter what magnification you use. You can double it, triple it, make it 10,876,432 times bigger, and the object still displays (more or less) the same features. The term fractal was coined by Benoît Mandelbrot, and there is an entire subclass of fractals named after him. They are seen in nature (and art, like here) quite a bit. Coastlines are fractal, as are — seriously — some kinds of broccoli.
However, fractals are generally calculated in two dimensions. What’s new here is that the fractal pattern has now been calculated in three dimensions! That is, to say the least, a non-trivial procedure — I used to play with some of the 2D equations many years ago, on my old 512k Fat Mac, with code written in Pascal (yes, with the semicolons and everything) and it was fascinating if very complex.
But the 3D idea has been written up by Daniel White, who, along with others, figured out how to create and render such an incredible object. He even created a "fly-over" video to demonstrate the fractal pattern:
Wow. Even if the math of this makes no sense at all to you, the beauty of this should be apparent.
Which brings up a point: why are mathematical shapes beautiful? What makes them so pleasing to our eyes and brain; why did we evolve an appreciation for such things? I don’t know, and at some point I’ll have to research that a bit — understanding the principles behind this will help me appreciate it even more.
One of the secondary goals of the Fermi gamma ray satellite is to look for the signature of dark matter. One idea for dark matter is that it’s composed of weird (and as yet undetected) particles called WIMPs (weakly interacting massive particles). A very odd property about them is that they are self-annihilating: when two of them touch, they turn into energy (and other, more easily detectable particles). When I first read about this several years ago I was pretty excited, because this is finally a testable hypothesis about dark matter.
My fellow Hive Overmind blogger and astronomer Sean Carroll writes that it’s possible Fermi has done just this. The data are not conclusive, but very provocative nonetheless. He has the details.
But I can’t resist adding that on The Big Bang Theory a few weeks ago, Raj and Sheldon were investigating building a detector to look for this very type of dark matter. I wrote David Saltzberg, the science advisor (whom I met on the set last month when I was visiting LA; more on him and that at a later date) and told him this, and he noted that I was right. Well, how about that! It had to happen sometime. Now, to publish…
And she mentioned friend of the JREF Hal Bidlack by name!
I have heard some rumors — as yet unsubstantiated but encouraging — that members of the U.S. government have taken an interest in this story, too.
What this all shows is that we need to stand up to nonsense and call it out, letting others know when they believe in garbage… especially when it will lead to people getting killed. If enough of us do it, then maybe, just maybe, we can get something done about it.
If you went to BadAstronomy.com and found yourself here, never fear: the BA Blog has moved to its new home at Discover Blogs. The original BA site (with the Moon Hoax debunking and all that) is still online, too.
Phil Plait, the creator of Bad Astronomy, is an astronomer, lecturer, and author. After ten years working on Hubble Space Telescope and six more working on astronomy education, he struck out on his own as a writer. He has written two books, dozens of magazine articles, and 12 bazillion blog articles. He is a skeptic, and fights misuses of science as well as praising the wonder of real science.
Contact me: The Bad Astronomer "at" gmail "dot" com
Bad Astronomy is a Wikio Top Blog! Clearly, Wikio has excellent taste.
"If things worked the way I wanted them to, any reporter about to do another 'sensational' story on deadly meteors would consult this volume, and bang! common sense would find its way into the news. How strange would that world be?" -- Adam Savage, Mythbusters
"Reading this book is like getting punched in the face by Carl Sagan. Frightening, but oddly exhilarating." -- Daniel H. Wilson, author of How to Survive a Robot Uprising
Disclaimer
The opinions and ideas expressed in this blog are solely those of the author, and do not necessarily reflect those of Discover Magazine and/or the James Randi Educational Foundation, of which Dr. Plait serves as President.