Category "earth"
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Asteroids hit the Earth more often than thought
As show in this map, small space asteroids hit the Earth more often than commonly thought. We’re continuing our recent asteroid theme. According to this map, small asteroids were documented hitting the earth 556 times in the twenty year from 1994 to 32013. Nasa notes that “almost all were harmless.” Ahhh, well, almost all, except for that Chelyabinsk event. (The study of these unlikely but potentially catastrophic “Black Swan” events, like the Carrington Event, is another topic we’ve discussed before (here).) Recall the Chelyabinsk event broke a lot of windows and caused a lot of other damage in rural Siberia (and made for some pretty spectacular video). Good thing Siberia is rural, because the Chelyabinsk event _only_ released 20-30 times more energy than the atomic bomb over Hiroshima. And it wasn’t detected before it entered Earth’s atmosphere. So maybe that early warning system needs some work if we want to continue feeling smug and so much superior to the dinosaurs.… Read the restGaia Hypothesis or Big Data in SciFi continued.
We’ve had fun looking at the impact of science on science and tech. With the recent passing of a very popular science fiction actor, we thought this was a good time to look at big data in science fiction. Originally published on our IG feed, this is part of a series on the data science in science fiction. We’ll start with the Gaia Hypothesis (Wikipedia). As it’s name implies, it’s actually not fiction, but a hypothesis that has not been proven. It might someday be regarded as science fact. (But at the moment close enough to science fiction for government work.) According to the hypothesis, Earth’s biosphere and other processes form a network of feedback loops that keep Earth in a homeostasis. In some interpretations, Earth is almost a conscious or intelligent entity, acting to remove irritants (humans?) that threaten homeostasis. However, the stabilization or intelligent behavior emerges out of the concerted effort of all of Earth’s organisms and geochemical processes, unconsciously working together.… Read the restMars: 3D printing raw material locations?
This 2001 view of mars seen by the Nasa Hubble space telescope might provide some clues as to locations where the raw materials for 3D printing might come from. Continuing on our red planet theme from the last few days, this is a 2001 photo of Mars from the Hubble space telescope.Mars has about 0.5 the diameter of Earth, or a quarter of the surface area. (AKA available real estate for you speculators. 🙂 ) Mars, the God of War, is indeed mostly made of iron as the ancient alchemists thought, or specifically iron(II) oxide, aka rust. (Mars was thought to be the God of War because of its blood color. Iron, of course, was the metal of weapons and war, and rust also resembled blood.) Critically, for expeditions, the poles contain significant amounts of water. The southern white polar ice cap, if melted, would cover the surface 11m in water.… Read the restRed Sky Rover: self-portrait of Mars Curosity at Gale Crater
Red Sky Rover: this is a self-portrait of the Nasa Mars Curiosity rover taken on Oct 31 2012 at Gale Crater. (We’re continuing on Martian theme, started with yesterday’s post on self-replication.) This photo was taken at “Rocknest,” in Gale Crater where the first scooping missions took place. (You all remember your Martian geography so you know exactly where Gale Crater is, right? Well, the place already has its own Wikipedia entry, which is more than one can say about some places on Earth. All it needs now is a postal code and a real estate agent. Maybe some fancy ads featuring models lounging near an (indoor? terraformed outdoor?) pool beneath the red sky. Maybe leave out the red sky and show only the faux tropical indoor pool. “Gale Crater condos starting in the low millions. Invest now; they aren’t making any more real estate.” Oh yes nasa and other space programs are.)… Read the restRecent Comments
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