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: Astronomy, Bad Astronomy, Connections, Fireworks, Gene Roddenberry, Man Conquers Space, NASA, Phil Plait, Predictions, Science, Science Fiction, Society, Space, Star Trek, Survival, YouTube | Tags: Bad Astronomy, Bill Nye, blogging, jim downey, NASA, Neil deGrasse Tyson, predictions, science, Science Fiction, space, Star Trek, video, www youtube
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: Connections, movies, Science Fiction, Space, Writing stuff, YouTube | Tags: 2001: A Space Odyssey, blogging, Communion of Dreams, jim downey, literature, mathematics, Menger Sponge, movies, Science Fiction, space, technology, video, writing, www youtube
I’m no mathematician, and I won’t claim that the imagery used of the ‘artifact’ in Communion of Dreams was intended to reference this, but if you think about it (and have read the entire book), this kind of explanation would work with higher orders of dimensional reality:
Mathematical Impressions: The Surprising Menger Sponge Slice
Jim Downey
*Of course. Which also fits with CoD, since it was an explicit homage to the first movie/book.
Filed under: Apollo program, General Musings, NASA, Ralph Waldo Emerson, Society, Space, Violence | Tags: Apollo 11, blogging, grief, jim downey, joy, loss, Michael Collins, NASA, space
We all know grief. The empty place at the holiday table. The hole in the heart. The missing man. Someone who is gone too soon.
In many ways, absence defines us.
But sometimes, those stars which have vanished from the firmament aren’t gone, they’re just removed from our limited sight. They’re not visible in the day, after all.*
And sometimes, the absence defines something else, bringing perspective, even joy:
“I feel this powerfully — not as fear or loneliness — but as awareness, anticipation, satisfaction, confidence, almost exultation. I like the feeling. Outside my window I can see stars — and that is all. Where I know the moon to be, there is simply a black void, the moon’s presence is defined solely by the absence of stars.”
Jim Downey
Filed under: Apollo program, Brave New World, Failure, General Musings, Government, Man Conquers Space, NASA, Predictions, Science, Science Fiction, Society, Space, tech, Violence | Tags: Apollo, blogging, Golden Spike, jim downey, Moon, NASA, Pearl Harbor, predictions, science, Science Fiction, space, technology
“Pearl Harbor” was 71 years ago today.
The launch of Apollo 17 was 40 years ago today.
That means that there was less time between the start of WWII (well, our involvement in it) and the end of humankind’s time on the Moon than there is between now and when Apollo 17 left the Taurus-Littrow valley.
That don’t seem right.
Yeah, sure, there’s a company saying that they want to send commercial flights back to the Moon.
Somehow, I doubt that it’s quite that easy.
Jim Downey
Filed under: Humor, NASA, Science, Space, tech | Tags: blogging, GRAIL, humor, jim downey, Moon, NASA, science, space, technology, video
I love the sense of humor:
GRAIL’s Gravity Tour of the Moon
This movie shows the variations in the lunar gravity field as measured by NASA’s Gravity Recovery and Interior Laboratory (GRAIL) during the primary mapping mission from March to May 2012. Very precise microwave measurements between two spacecraft, named Ebb and Flow, were used to map gravity with high precision and high spatial resolution.
There’s more, including images and vid, at the link.
Jim Downey
Filed under: Amazon, Connections, Feedback, Kindle, Science Fiction, SETI, Space, Writing stuff | Tags: Amazon, Communion of Dreams, direct publishing, feedback, jim downey, Kindle, literature, Science Fiction, space, writing
Got a nice note from someone on a forum where I’m a member. They had picked up Communion of Dreams recently, and just finished it. Here’s an excerpt from the note [spoiler warning if you haven’t read CoD]:
While I was reading, I started to think about the bubble as more of a womb. I was imagining some advanced civilization or group of civilizations who had sealed us off because we were not yet ready to interact with the rest of the universe.
Did I have that right? If so, why were we only able to access the healing energy through our own manipulation? Was no one watching us?
My response to that bit:
I *really* like your explanation of the ‘bubble’ as akin to a womb — an analogy I hadn’t seen anyone else mention yet, but one that gets to the essence of the idea very well. To extend your analogy a bit, you might consider that it takes children a while after birth to learn to walk & talk — there are lots of things a child is born with the innate potential to do, but which won’t manifest until later, and so aren’t looked for during pregnancy.
Just thought I’d share that.
Jim Downey
Filed under: Amazon, Babylon 5, Connections, Humor, Kindle, Marketing, movies, Publishing, Science Fiction, Space, Survival, YouTube | Tags: Amazon, Babylon 5, blogging, Bruce Willis, Communion of Dreams, direct publishing, humor, jim downey, Kickstarter, Kindle, literature, Milla Jovovich, movies, promotion, Roman, Science Fiction, space, St. Cybi's Well, The Fifth Element, V for Vendetta, video, writing, www youtube
“V”, it is said, is for “victory.”
It’s also for Vendetta.
No, it’s not for that dreadful miniseries. Or the TV series. Gah. Why did you have to remind me of that???
It’s also for “5“. As in Babylon. As in the number of days remaining in my Kickstarter.
And as in elements. I think this Fifth Element bit says it best:
Yes, some things *are* worth saving.
Jim Downey
Communion Of Dreams 