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Showing posts with the label space exploration

Pluto's Unexpected Terrain; SETI, Radio, and Drums

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Pluto's still in the news, as New Horizons starts sending data from its July 14 flyby. That will take more than a year, but there have already been surprises: including "not easy to explain terrain" near Pluto's equator. Meanwhile, the DSCOVR Solar weather monitor sent back a snapshot of Earth; and Professor Stephen Hawking is supporting a new search for intelligent life in the universe. I think the Royal Society in London's Breakthrough Initiatives group will collect interesting facts while listening for extraterrestrial radio broadcasts. But I also think that our neighbors could easily have been using wireless telegraphy when Oldowan tools were our high tech. More at A Catholic Citizen in America .

New Horizons: Past Pluto, Outward Bound

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New Horizons has started sending back data from its Pluto flyby on July 14, 2015. Pluto and Charon don't have nearly as many craters as scientists expected. One patch, at least, seems to be very new, on the cosmic time scale. Something, maybe Pluto's equivalent of volcanic eruptions, resurfaced that terrain in the last 100,000,000 years. There's something odd about Charon's north polar region, too. Interesting, anyway. More at A Catholic Citizen in America .

Dawn's Arrival at Ceres; Sims and "Chaos"

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Dawn became the first spacecraft to orbit two asteroids or planets other than Earth last week. More to the point, we're learning more about these survivors from the early Solar System. Meanwhile, from the world of infotainment , "chaos" and the early Solar System.... ...Either way, Vesta and Ceres are — most likely — the last remaining large protoplanets : which makes them valuable samples of the early Solar System. Apart from size and distance from our sun, they're very different: which also makes them intriguing places to study. Scientists have working ideas about how Vesta and Ceres ended up where they are, but those hypotheses may change when we learn more from the Dawn mission. There's quite a bit of data to work with already, from Dawn's stopover at Vesta.... More at A Catholic Citizen in America .

Asteroid Readiness, and a SpaceX Test Landing

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European officials seem to think that planning about what to do when an asteroid heads their way is a good idea. I think they're right. A SpaceX cargo run to the International Space Station arrived on time, but the flight's experimental reusable booster didn't land properly. Actually, it crashed.... I started writing about asteroid impacts, which reminded me of ice ages, dodos, and responsibility. This isn't the most tightly-organized post I've ever done. More at A Catholic Citizen in America .

"Philae ... Headed for History"

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A spacecraft landed on a comet, 67P/Churyumov-Gerasimenko, this week: an historic 'first.' Back on Earth, scientists at the ALMA radio telescope got the clearest picture yet of planets about to take shape.... ...I'm looking forward to what we'll learn from the Rosetta mission's lander and orbiter: how closely its water matches Earth's, and what other substances it carried from the Solar System's borderlands.... More at A Catholic Citizen in America .

New Maps for Earth and Moon, and India's Mars Mission

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Scientists at the Scripps Institution of Oceanography discovered thousands of previously-unknown submerged mountains in data from satellites designed for measuring ice caps and ocean currents. Other scientists found a long-buried rift system on Earth's moon, and India's space program put a spacecraft in Mars orbit — on their first try.... ...I'm pretty sure that most ' pure science ' has practical applications: given time. Sometimes, given a lot of time. It took about two millennia for the aeolipiles of Vitruvius and Hero of Alexandria to make the transition from laboratory curiosities to steam engines and spaceship motors.... More at A Catholic Citizen in America .

Starships, Dinosaurs, and Long-Distance Service for Mars

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Some scientists think dinosaurs could have survived that asteroid impact. Others are taking another look at big a starship needs to be, and NASA is taking bids on long-distance service to Mars.... " ...But first, a bit about the Beatitudes, Ulysses, and Dante's "Inferno."... ...Expecting knowledge, or anything else, to take God's place would be daft: and against the rules. But that doesn't make seeking knowledge bad. Studying this universe and developing new tools are part of being human. That's what we're supposed to do.... " More at A Catholic Citizen in America .

Lowering Costs on the Earth-to-Orbit Run, Preparing for Incoming Asteroids

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Getting scared silly by the latest doomsday prediction is silly. So is ignoring real threats. (Copyright M. Ahmetvaleev, via NASA News, used w/o permission.) The Chelyabinsk meteor didn't kill anyone. Only 1,100 or so folks needed medical treatment: for injuries ranging from cuts and bruises to a broken spine. Next time, we may not get off so lightly. Now is a very good time to start getting ready for an incoming asteroid.... ...Looking Ahead (Reaction Engines Limited/Terra Novus, via Wikimedia Commons, used w/o permission.) (Reaction Engines Limited's Skylon spaceplane.) Apart from Space Shuttle fleet, now out of service, and recoverable capsules like Space-X's Dragon, launch vehicles are still a single-use technology. That makes getting into space very expensive. A decade from now, we'll probably see shipping rates go down: dramatically, I suspect. Reaction Engines Limited's Skylon is scheduled for a test flight to the International Space Stati