Filed under: Astronomy, Augmented Reality, Brave New World, ISS, Man Conquers Space, Music, NASA, Science, Science Fiction, Space, tech, YouTube | Tags: Chris Hadfield, David Bowie, ISS, music, NASA, science, Science Fiction, space, video, www youtube
How cool is this?
How cool is Chris Hadfield?
Jim Downey
Filed under: Art, Astronomy, Cassini, Government, MetaFilter, Music, NASA, Saturn, Science, Science Fiction, Space, Weather, YouTube | Tags: art, Blood Sweat & Tears, Cassini, Communion of Dreams, hurricane, jim downey, MetaFilter, music, NASA, photography, Saturn, science, Science Fiction, space, Spinning Wheels, The Rose, www youtube
The Rose
The spinning vortex of Saturn’s north polar storm resembles a deep red rose of giant proportions surrounded by green foliage in this false-color image from NASA’s Cassini spacecraft. Measurements have sized the eye at a staggering 1,250 miles (2,000 kilometers) across with cloud speeds as fast as 330 miles per hour (150 meters per second).
A fascinating short video and full explanation can be found on NASA’s site:
PASADENA, Calif. – NASA’s Cassini spacecraft has provided scientists the first close-up, visible-light views of a behemoth hurricane swirling around Saturn’s north pole.
In high-resolution pictures and video, scientists see the hurricane’s eye is about 1,250 miles (2,000 kilometers) wide, 20 times larger than the average hurricane eye on Earth. Thin, bright clouds at the outer edge of the hurricane are traveling 330 mph(150 meters per second). The hurricane swirls inside a large, mysterious, six-sided weather pattern known as the hexagon.
Very cool. If I ever have reason to revise Communion of Dreams, I would certainly include reference to The Rose since most everything happens on and around Titan.
Jim Downey
Filed under: Art, Astronomy, Fireworks, Music, NASA, NPR, Science, Space, YouTube | Tags: art, fireworks, Jerry Lee Lewis, jim downey, music, NASA, NPR, science, Solar Dynamics Observatory, space, www youtube
Via NPR, this gorgeous, stunning vid:
And while I think the music they use is wonderful, I think they missed an obvious choice …
Jim Downey
Filed under: Astronomy, Brave New World, Jupiter, NASA, NPR, Predictions, Saturn, Science, Science Fiction, SETI, Space, tech | Tags: blogging, David Charbonneau, exogenesis, exoplanets, Goldilocks, jim downey, Jupiter, Kepler mission, NASA, NPR, predictions, Saturn, science, Science Fiction
As something of a follow-up to yesterday’s post, news today of the discovery (thanks to the Kepler mission) of three exoplanets which are very good candidates for harboring life. First, their size is within an order of magnitude of Earth’s — and, specifically, less than twice the size of Earth — meaning that they’re not gas giants such as Saturn or Jupiter. Secondly, and at least as importantly, they fall within the “habitable zone” in their star system. That’s the so-called “Goldilocks Zone” where liquid water can exist (it’s not too cold and not too hot).
This is exciting! As it is put in the article:
Two of the three detailed in the new findings in the journal Science are of particular interest: Kepler-62-e and Kepler-62-f. William Borucki, the chief scientist for NASA’s Kepler telescope, says the planets are slightly wider than Earth, but not too big. Kepler-62-e is a bit toasty, like a Hawaiian world and Kepler-62-f is a bit nippy, more Alaskan, Borucki tells the AP.
“This is the first one where I’m thinking, ‘Huh, Kepler-62-f really might have life on it,’ ” said study co-author David Charbonneau of Harvard. “This is a very important barrier that’s been crossed. Why wouldn’t it have life?”
Why, indeed?
Jim Downey
Filed under: Astronomy, Brave New World, Connections, movies, Music, NASA, New Horizons, NPR, Predictions, Science, Science Fiction, SETI, Society, Space, tech, YouTube | Tags: 13.7 Blog, blogging, Communion of Dreams, Drake Equation, exoplanets, jim downey, Kepler mission, Marcelo Gleiser, music, NASA, NPR, Pink Floyd, predictions, science, Science Fiction, SETI, space, technology, TESS, The Wall, www youtube
From the opening pages of Communion of Dreams:
Jon sat there for a moment, trying to digest what Seth said. According to what pretty much everyone thought, it wasn’t possible. SETI, OSETI, META and BETA had pretty much settled that question for most scientists decades ago, and twenty years of settlement efforts throughout the solar system hadn’t changed anyone’s mind. Even with the Advanced Survey Array out at Titan Prime searching nearby systems for good settlement prospects, there had never been an indication that there was an intelligent, technologically advanced race anywhere within earshot.
It’s one of the very basic questions of space science: are we (sentient beings) unique? Rare? Common? There are a lot of ways to think about it, and here’s a nice piece on NPR discussing some of the relevant parts of the question and what we’re doing about it. An excerpt:
So, to address the first part of the question we must find out how unique the Earth is. We then should figure out how unique life, and humans, are. Fortunately, thanks to NASA’s Kepler mission, we are making huge progress in the first part of the answer. A key finding is that the majority of stars (around 70 percent) have at least one planet orbiting around them. Based on the data so far (2,740 planet candidates and 115 confirmations), Kepler scientists estimate that some 17 percent of these are Earth-size, meaning with similar mass and rocky composition as the Earth, and possibly close enough to their parent star that water, if present, could be in its liquid state.
More good news arrived on this front earlier this month as NASA authorized the construction of Kepler’s successor, TESS (for Transit Exoplanet Survey Satellite). With launch scheduled for 2017, TESS will survey a much wider area of the sky than Kepler, while focusing mostly on stars that are closer. This way, it will use spectroscopy to resolve at least part of the atmospheric composition of the exoplanets. The goal is to find telling signs of life-related compounds such as ozone, water, carbon dioxide and, if we’re really lucky, even chlorophyll. Successful detection would be very exciting, as it’d point to what optimists expect, a few fairly close Earth-like planets with metabolizing beings.
I hope I live long enough that science is able to make a definitive affirmation of life, then intelligent life, outside our own planet.
Until then, well, there’s science fiction.
Jim Downey
Filed under: Predictions, Science Fiction, Space, NASA, Society, Connections, Science, Star Trek, Gene Roddenberry, Fireworks, Astronomy, YouTube, Phil Plait, Bad Astronomy, Man Conquers Space, Survival | Tags: jim downey, blogging, Science Fiction, video, www youtube, NASA, space, science, predictions, Star Trek, Bad Astronomy, Bill Nye, Neil deGrasse Tyson
Unsurprisingly, this has been making the rounds among my friends:
I say “unsurprisingly” because a lot of my friends are reacting to yesterday’s well-documented meteor explosion in the Ural mountains (Russia), and today’s near-pass of a much larger body:
As noted in the various science stories, 2012 DA14 is about 150 feet in diameter, and would have about the same effect were it to hit the Earth as Meteor Crater, depending on the exact composition, speed and angle of approach of the meteor. If you want to play with the variables, here’s a simulator I’ve had fun playing with in the past Impact: Earth!
On one end of the range of effects would be just another bright light in the sky, as the thing exploded in the upper atmosphere. On the other end, another mile-wide crater where a city used to be. Fun, eh? And remember – 2012 DA14 was just discovered last year, and then by pure chance. There are any number of such potential threats out in space. As the Washington Post puts it:
For the foreseeable future, then, Earth will continue to reside in a cosmic shooting gallery with an enormous number of currently unknown objects, some of which may have a direct bead on us without our knowing. While it is probably much more unlikely than likely, a potentially disastrous collision with an asteroid of at least the dimensions comparable to DA14 could occur anytime possibly with little or no warning in our lifetimes.
Keep your fingers crossed that our luck — and our atmospheric ‘shields’ — continue to hold until we no longer have all of our eggs in this particular basket.
Jim Downey
Filed under: Art, Astronomy, NASA, Predictions, Science, Science Fiction, Space, tech, YouTube | Tags: art, Communion of Dreams, jim downey, laser, Lunar Reconnaissance Orbiter, Mona Lisa, Moon, NASA, predictions, science, Science Fiction, space, technology, video, www youtube
I don’t want to reveal any spoilers, but here’s a passage from Chapter 15 of Communion of Dreams:
The moment the projector was set down and turned on, Jon could see what had them all so excited. There were flashes of light coming from the image of the ship, clearly directed back at the ASA.
“It’s brilliant. They’re using the point-defense lasers designed for clearing away debris in their path as strobes, to communicate with us,” said Gish.
Gregor nodded. “Yes, yes. Simple digital message, as fast as lasers can be switched on and off. Not designed for communications,so cannot transmit as much data as normal. But pretty good.”
Why do I mention this? Well, guess what’s just been done by NASA? Take a look:
Here’s an excerpt from the associated article:
NASA has turned the Mona Lisa into the first digital image to be transmitted via laser beam from Earth to a spacecraft in lunar orbit, nearly 240,000 miles away, thanks to a technology that may soon become routine.
The experiment took advantage of the laser-tracking system that’s in operation aboard NASA’s Lunar Reconnaissance Orbiter, which has been circling the moon for the past three and a half years. NASA sends regular laser pulses from the Next Generation Satellite Ranging station at Goddard Space Flight Center in Maryland to the space probe’s Lunar Orbiter Laser Altimeter, or LOLA, to measure its precise position in lunar orbit.
I love to see my predictions come true.
Jim Downey
With thanks to Wendy for sending me the article!
Filed under: Apollo program, Astronomy, Connections, ISS, Man Conquers Space, NASA, Predictions, Preparedness, Science, Science Fiction, Space, Survival, tech | Tags: Apollo, blogging, ISS, jim downey, NASA, predictions, science, Science Fiction, space, video
It all depends on your point-of-view:
Jim Downey
Filed under: Art, Astronomy, Music, National Geographic | Tags: art, astronomy, Cathedral Peak, jim downey, Moon, music, National Geographic, video
This is lovely.
Jim Downey
Filed under: Art, Astronomy, Bad Astronomy, Ballistics, Connections, Failure, Feedback, General Musings, Humor, Light pollution, Predictions, Promotion, Science, Science Fiction, Space, tech, Writing stuff | Tags: art, blogging, Communion of Dreams, humor, jim downey, literature, Moon, Paint the Moon, predictions, Randall Munroe, science, Science Fiction, space, technology, Wikipedia, xkcd
Didn’t I just say that Randall Monroe is brilliant? Of course I did. That was writing about his artwork. And this morning he proved (once again) that his science is solid, as well:
Er, let me explain…
Monroe does the popular webcomic xkcd. If you don’t read it regularly, you should. Anyway, this summer he added in another feature called “What If?” which he explains with this subtitle: “Answering your hypothetical questions with physics, every Tuesday.”
And for whatever reason, today’s entry is in response to this question: “If every person on Earth aimed a laser pointer at the Moon at the same time, would it change color?”
Gee … where have I heard that question before? Hmm … perhaps in Chapter 9 of Communion of Dreams?
“You know, I could design a program that would enhance the image. Everyone who looked up at that would see our Moon,instead. Wouldn’t take much. I could even paint it red.”
“Paint it red? You mean the Moon?
“Yeah, old joke. There was this artist back at the turn of the century who had this project called ‘Paint the Moon’. He wanted to get everyone in the Western Hemisphere to focus these popular little hand-held laser pointers on the Moon all at once, with the idea that enough of the laser light would cause a red spot to appear. Had it all figured: what phase of the Moon was best to do it, how people could aim their lasers, the whole bit.”
“Crazy,” said Jon. Then, after a pause, “It didn’t work, did it?”
“Nah. But that wasn’t the point. He always described the project as a ‘shared lyrical fantasy’, designed to bring people together for a single moment, all doing the same thing. The first attempt got quite a lot of attention world-wide from the media. Millions heard about it, and maybe tens of thousands participated. It is still considered a seminal art event – we studied it in school.”
“But . . . what’s the point?”
“Oh, I just always liked that grandiose sense of whimsy. There were a number of crazy things like that back then, before everything went to hell.”
Unsurprisingly, Monroe concludes that the laser pointers wouldn’t accomplish the task. But then he uses that as a jumping-off point to explore what it *would* take to accomplish the task. And then some. It’s a fun piece, and likely the image of his I posted above has just become another instant classic, not unlike this one (which is the not-xkcd-approved Official T-shirt of BBTI).
Jim Downey
PS: Thanks to the people who sent me a link to the xkcd What If? entry this morning — very much appreciated. Now, if anyone would like to pop by the xkcd forums and mention this connection, I’d greatly appreciate it. Cheers!
