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  • #31
    A video from my friend's blog.

    It's a short video of earth taken from orbit. Trust me, it's well worth the look!!

    http://josh-cunningham.com/this-is-o...eo-from-orbit/

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    • #32
      Was watching one of the Stephen Hawking shows on Science Channel, forgot what it's called. It's a pretty good series and of course Hawking talks about very interesting things that make you wonder/think.

      One that got my attention was the idea of orbiting a Black Hole's center. He says at a certain speed and being constantly at that speed without drastically changing it, you could orbit the center of a Black Hole without being sucked in.

      Some theories of Black Holes(the more commonly believed theory) is that the center isn't a hole itself, but a circular object, pretty much like a black star.

      Example:


      It's hard finding astronauts that will travel to Mars or even an asteroid. Who the hell would volunteer to orbit a Black Hole? That'd be a pretty cool day in human history if it ever happened.

      Another one he talked about was time travel. He said it's be pretty much impossible to travel backwards in time, but travel ahead of time could be achieved if humans ever master light speed. He said it's impossible to ever go faster than light, so the term faster than light is invalid. But the example of time traveling and light speed was, if you had a train on Earth circling it at light speed, what seems like a few minutes is actually a thousand years. When you are travel so fast everything is the vessel slows down while everything around it changes. So everyone on that train could be merely 11 minutes older, but traveled a thousand years into the future.
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      • #33
        http://timetravelphilosophy.net/topics/relativity/

        that website does some simple stuff with if you were even traveling at 80% the speed of light how a 10 year trip to earth only takes the observer 6 years.

        My question is, how does space (anything, man made satellite, asteroid, etc) interact with something that is moving that fast in a sped up time frame.

        For example, how do you predict where an object will be if your basically in a different time, what happens if those two collide? Would you be colliding with the past? How do you predict an object you don't know about? Say you traveled 200 years ahead and someone put up a satellite on your orbit/trajectory during that time, how do you avoid that?
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        • #34
          Scientists Want to Bring Some Animals Back from Extinction

          Was browsing Yahoo and came across this. My opinion on it, if we can do it....do it. Would it cost tax payers or is the money for this coming from businessmen and research groups? I ask that because NASA is mostly funded by research groups, colleges,and businessmen. They only get 2% of tax payers money.

          I think it'd be pretty bad ass to see these animals again and they should be protected by countries laws from killing. Because people will want to kill them for sport and for other purposes.(riches)

          On Friday at a National Geographic-sponsored TEDx conference, scientists met in Washington, D.C. to discuss which animals we should bring back from extinction. They also discussed the how, why, and ethics of doing so. They called it "de-extinction."

          There are a few guidelines for which ancient species are considered, and sadly, dinosaurs are so long dead they aren't in the picture. Their DNA has long ago degraded, so researchers are fairly sure that Jurassic Park will never happen.

          They chose the animals using the following criteria: Are the species desirable — do they hold an important ecological function or are they beloved by humans? Are the species practical choices — do we have access to tissue that could give us good quality DNA samples or germ cells to reproduce the species? And are they able to be reintroduced to the wild — are the habitats in which they live available and do we know why they went extinct in the first place?

          This still leaves plenty of other animals on the table. The list of candidates is actually pretty long, considering. The cost of de-extinction varies by species but projects could run into the hundreds of thousands of dollars, if not more. Then there's also the cost of housing the animals once they are created, and re-introducing them into the wild and protecting them from poachers once they are there.

          But, if you were the zoo that had that one Woolly mammoth or saber-toothed cat, these costs just might be worth it.

          Here are 10 animals they are hoping to one day resurrect.

          1. The mythical Aurochs is not a myth at all, actually. It is the ancestor of domestic cattle and lived throughout Europe, Asia, and North Africa. They died off in 1627.

          2. The Dodo is known for being really dumb — but really it was just fearless because it evolved without any natural predators. Humans who arrived on its home island, Mauritius, took advantage of this and killed them all for food.

          3. The Labrador Duck was always rare but disappeared between 1850 and 1870. Supposedly it didn't taste good, so it wasn't hunted extensively for food, so its extinction isn't fully explained.

          4.The Ivory-billed Woodpecker lived in "virgin forests" of the southeastern United states, but there hasn't been a confirmed sighting of the bird since the 1940s. The Cornell Lab of Ornithology even offered a $50,000 reward for someone who could lead researchers to a living specimen.

          5. Frozen carcasses of the Woolly Mammoth allow scientists access to well-preserved DNA from these prehistoric giant animals, related to elephants. The last isolated population of woolly mammoths lived on Wrangel Island in the Arctic Ocean until 4,000 years ago.

          6. The Mastodon is an extinct species related to elephants that lived in North and Central America. They went extinct 12,000 years ago.

          7. This extinct species of plains Zebra, the Quagga, once lived in South Africa. The last wild one was shot in 1870 and the last in captivity died in 1883.

          8. The iconic Saber-toothed cat, Smilodon, is also on the list. It died out about 10,000 years ago due to climate changes at the end of the last Ice Age.

          9. The Thylacine, or Tasmanian Tiger, is the only marsupial to make the list. It lived in Australia, Tasmania and New Guinea until the 1960s.

          10. The Caribbean monk seal was hunted to extinction for use as oil, and they were out-competed for fish (their main food source) by humans. The last individual was seen in 1952.
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          • #35
            http://www.space.com/22004-skylon-sp...51463010185914

            Flight tests of an engine for the giant space plane Skylon are expected by 2020.

            The British government and European Space Agency (ESA) are providing $100 million in funding, which will be matched by private financing to complete the propulsion system's development and test.

            Two Synergetic Air-Breathing Rocket Engines (SABRE) will power the Skylon space plane — a privately funded, single-stage-to-orbit concept vehicle that is 276 feet (84 meters) long. At take-off, the plane will weigh about 303 tons (275,000 kilograms). [Project Skylon: A Giant British Space Plane Concept (Photos)]

            The two SABREs are located on the tips of the delta wings attached midway down the Skylon’s dart-like fuselage, powering it to deliver up to 33,000-pounds (15,000 kg) into orbit. That payload could be a satellite or a crew module, officials from its maker, England-based aerospace company Reaction Engines Ltd., have said.

            The 2020 flight test will follow the completion of a prototype of the space plane engine by 2017, according to the UK government’s minister for universities and science David Willetts.

            Speaking on Tuesday (July 16) at the UK Space Conference 2013 in Glasgow, Scotland, Willetts said: "£60 million ($90 million) has been committed to begin building the SABRE prototype. We expect to see the completion of the prototype SABRE by 2017 and flight tests around 2020."

            Reaction Engines’ SABRE development program plans to flight-test the engine using an unmanned aircraft called the Nacelle Test Vehicle. The entire development program will require a consortium of companies, and Reaction Engines has been seeking partners as well as financiers.

            "Thanks to the government’s support, Reaction Engines will now be able move to the next phase in the development of its engine and heat management technology," Alan Bond, Reaction Engines’ founder, said in a statement.

            SABRE burns hydrogen and oxygen for thrust, acting like a jet for Skylon's flight through the thick lower atmosphere, taking in oxygen from the atmosphere to combust it with onboard liquid hydrogen. But when the Skylon space plane reaches an altitude of 16 miles (26 kilometers) and five times the speed of sound (Mach 5), it switches over to its onboard liquid oxygen tank to reach orbit.

            For this next phase, the £60 million will be paid in two tranches, £35 million in the UK government’s financial year 2014-2015 and then £25 million for 2015-2016. This funding is expected to create about 1,000 engineering and technology jobs and support a further 2,000 jobs in the wider economy, officials said.

            By 2017, the UK government expects that SABRE's design will be done, ground demonstrations of engine technology carried out; a flight test of the SABRE rocket nozzle achieved; and improvements to the heat exchanger technology and manufacturing capability accomplished.

            SABRE's heat exchanger, also known as a pre-cooler, is the engine's key technology. Just before the engine switches to rocket mode at Mach 5, the incoming air will have to be cooled from 1,832 degrees Fahrenheit (1,000 degrees Celsius) to minus 238 degrees Fahrenheit (minus 150 degrees C), in one one-hundredth of a second, displacing 400 megawatts of heat energy using technology that weighs less than 2756 pounds (1,250 kg).

            The pre-cooler technology was successfully tested in 2012, and the achievement was independently confirmed by ESA, on behalf of the UK government.

            "The pre-cooler test objectives have all been successfully met and ESA is satisfied that the tests demonstrate the technology required for SABRE engine development," ESA officials said in November 2012.

            Tested at Reaction Engine's B9 facility with a Viper jet engine, a flight-weight pre-cooler ran for the full Skylon ascent duration of six to eight minutes, cooling the Viper's exhaust to cryogenic temperatures.
            Willetts' announcement of the £60 million repeats the June 27 post on Twitter from his government's treasury secretary, Chancellor George Osborne, which originally gave the figure. Reaction Engines has confirmed exclusively to SPACE.com that it is also receiving a further 8 million euros ($10.5 million) from ESA, which was approved around the start of the year.

            Mark Hempsell, Reaction Engines' future programs director, said that the 8 million euros is to pay for improving the heat exchanger and planning how the £60 million will be spent and leveraged to raise additional private financing.

            "It's a case of the government money unlocking the private financing." Hempsell told SPACE.com.

            He added that the private and government financing will take SABRE to its critical design review, mature various engine technologies and validate them within a test engine. This test engine is not a subscale version of the SABRE; rather, it is designed to validate the individual SABRE technologies and how they will interact with each other.

            The 8 million euros is the latest financial support for SABRE. ESA and the UK government provided about 1 million euros ($1.56 million) in 2009 for a £6 million pre-cooler development program, which led to ESA's 2012 validation.

            ESA also gave Skylon a boost in May 2011 when its experts at a UK government-backed three-day technical review found that the Skylon design had no "showstoppers." Other Skylon technologies developed by Reaction Engines include an oxygen-cooled combustion chamber and the rocket engine's nozzle and its intake, which have been computer modeled and tested in a wind tunnel.
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            • #36
              Another cool and interesting article. I wouldn't wanna be near it, but looks like something that'd be beast to see on like a infrared camera or pictures from Hubble.

              http://news.yahoo.com/kilonova-dead-...212239960.html

              Cataclysmic crashes involving black holes and ultradense neutron stars may explain the briefest of the most powerful explosions in the universe, scientists say.

              NASA scientists are calling the new type of short, but intense, cosmic collision and conflagration a "kilonova," an explosion so powerful it is 1,000 times stronger than a typical star explosion, called a nova. Such events have long been predicted by astronomers, but never seen until now, researchers said. The discovery could shed light on the origin of heavy elements such as gold and platinum, they added.

              Gamma-ray bursts are the most intense outbursts ever detected, giving off as much energy in an instant as our sun will beam out during its entire 10-billion-year lifetime. A nearby burst directed at Earth could easily cause a mass extinction, researchers say. [See more photos of the "kilonova" gamma-ray-burst explosion]

              There are two kinds of gamma-ray bursts — ones that are longer-lived, lasting more than two seconds, and less common short-lived ones, lasting about two seconds or less.

              Scientists have suggested these brief gamma-ray bursts might be caused by cataclysmic mergers of incredibly dense cosmic bodies — either two neutron stars (the tiny remnants of exploded stars) or a neutron star and a black hole. However, they lacked evidence until now.


              Astronomer Nial Tanvir at the University of Leicester in England and his colleagues analyzed the short gamma-ray burst GRB 130603B, which exploded about 4 billion light-years away on June 3. NASA's Swift satellite measured it as 0.18 seconds long, while NASA's Wind spacecraft determined that it lasted only 0.09 seconds.

              The mergers of dense cosmic bodies that are thought to cause short gamma-ray bursts can also blast out neutron-rich gas that rapidly generates heavy elements such as gold and platinum, scientists say. These "r-process" elements can undergo radioactive decay and release an enormous amount of energy — 1,000 times or so that given off by stellar explosions such as novas. These powerful events are thus known as "kilonovas" ("kilo" means "thousand" in Greek).

              NASA's Hubble Space Telescope revealed that the near-infrared afterglow that accompanied GRB 130603B was the kind one would expect from a kilonova. This is smoking-gun evidence that an explosive merger caused the gamma-ray burst, Tanvir told SPACE.com.

              "This is just the first example, and we will have to search for and study others to be completely sure, but it certainly looks right," Tanvir said.

              It remains uncertain what kind of merger caused this kilonova and gamma-ray burst. The theoretical predictions for these mergers and the behavior of kilonovas "still have many uncertainties, so it is too early to try to distinguish these possibilities," Tanvir said.

              In the future, the researchers aim to find other examples of kilonovas accompanying short gamma-ray bursts. Tanvir added that future research into kilonovas could shed light on the origin of r-process elements.

              "The r-process elements are heavy elements whose origin we have long been uncertain about," Tanvir said. "They are not produced in normal stars, and astronomers have generally assumed they must be created in supernovae. However, the calculations suggest supernovae may not be good at creating those elements, so it is possible that kilonovae from merging compact objects may be the primary route in the universe to producing these elements."

              The scientists detailed their findings online Aug. 3 in the journal Nature.
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              • #37
                I want to see pics of one.

                apparently pitch is the slowest moving liquid int he world.

                http://news.discovery.com/earth/worl...era-130802.htm

                World's. Slowest. Moving. Drop Drops on Camera
                Aug 2, 2013 10:09 AM ET // by Christina Reed

                What’s slower than ketchup, but faster than glass?

                OK — trick question because glass actually is a solid.*

                An old experiment, dusty and shelved for much of its duration, finally let fall a drop of pitch, also known as bitumen or asphalt, in front of cameras for the first time. Set up in 1944 at Trinity College Dublin — by no one anyone can remember, with an untold number of drops in its lifetime fallen unseen — the drip that looks like a solid but is actually moving very, very slowly, dropped on July 11 at around 5 p.m., with web-cameras faithfully recording the action.

                And action it was.

                Corpse Flower and Other Late Bloomers: Photos

                “It takes 7 to 13 years for a drop to form, but only a tenth of a second for it to fall,” reported Nature News. A similar experiment set up in 1927 at the University of Queensland in Brisbane, Australia, has had eight drops fall, but the custodian of that experiment since 1961, John Mainstone, hasn’t seen any of them fall with his own eyes and just missed recording the last one that fell in 2000 because the camera was offline.

                In Dublin, physicist Shane Bergin and colleagues had dusted off the experiment and set up the web cameras last April to capture the pitch drop. “We were all so excited,” Bergin told Nature News. “It’s been such a great talking point, with colleagues eager to investigate the mechanics of the break, and the viscosity of the pitch.”

                Based on the timing of the flow, the team identified the pitch as being around 2 million times more viscous than honey.

                For his part, Mansfield is, as one might expect, drooling over the data. “I have been examining the video over and over again,” he told Nature News, ”and there were a number of things about it that were really quite tantalizing for a very long time pitch-drop observer like myself.”

                Watch the video at FoxNews.com.

                *Despite the inconsistent thickness of old window panes, glass at room temperature is a solid; those old panes were just cut in a fashion that left them thicker at the bottom.
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                • #38
                  New Species Found in 'Tropical Eden': Photos
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                  • #39
                    I've been slacking lately. A whole lot has happened in Astronomy, I'll try to keep this thread update on new events on the Astronomy side.

                    Science bump.

                    Dawn became the first spacecraft to orbit a dwarf planet. Orbiting one of my favorites Ceres.

                    Curiosity is still rovering around. Curiosity is back in action for the first time after suffering a glitch late last month.
                    Curiosity had been stationary since Feb. 27, when it experienced a short circuit while attempting to transfer some samples.

                    It was discovered that Jupiter's moon Ganymede has salt water oceans underneath it's surface. Ganymede is Jupiter's largest one and is covered in a thick ice crust. The Satellite has more water than Earth, leading to a lot of possibilities in the search for life on any level.
                    Scientists have also found that Ganymede's surface shows signs of flooding. Europa was previously the most popular moon of Jupiter with plans of mission to study the moon's water. Now Ganymede might also be in talks of a mission to further study the moon's oceans.

                    And if there wasn't already a lot of news on Moons, Saturn's Enceladus may have a warm subsurface ocean, according to new research from the University of Colorado Boulder and NASA's Cassini mission scientists. Sean Hsu told USA TODAY that he moon may be habitable. Tiny grains of rock detected by NASA's Cassini spacecraft near Saturn indicate that there may be hydrothermal activity occurring underneath Enceladus's icy surface.

                    The microscopic grains likely formed very recently from chemical reactions between rock and hot water, Hsu said.

                    Similar activity that is happening on Enceladus, happens here on Earth with Hydrothermal vents. Which in recent years proved that life could thrive at even those temps.

                    Have you guys found anything interesting in the world of Science? Please share.
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                    • #40
                      Here's my take on all this stuff:

                      Our whole universe was in a hot dense state,
                      Then nearly fourteen billion years ago expansion started. Wait...
                      The Earth began to cool,
                      The autotrophs began to drool,
                      Neanderthals developed tools,
                      We built a wall (we built the pyramids),
                      Math, science, history, unraveling the mystery,
                      That all started with the big bang (Bang)!

                      "Since the dawn of man" is really not that long,
                      As every galaxy was formed in less time than it takes to sing this song.
                      A fraction of a second and the elements were made.
                      The bipeds stood up straight,
                      The dinosaurs all met their fate,
                      They tried to leap but they were late
                      And they all died (they froze their asses off)
                      The oceans and Pangaea
                      See ya wouldn't wanna be ya
                      Set in motion by the same big bang!

                      It all started with the big BANG!

                      It's expanding ever outward but one day
                      It will pause and start to go the other way.
                      Collapsing ever inward, we won't be here, it won't be heard
                      Our best and brightest figure that it'll make an even bigger bang!

                      Australopithecus would really have been sick of us
                      Debating how we're here, they're catching deer (we're catching viruses)
                      Religion or astronomy (Encarta Deuteronomy)
                      It all started with the big bang!

                      Music and mythology, Einstein and astrology
                      It all started with the big bang!
                      It all started with the big... BANG!



                      Your welcome!

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                      • #41
                        So, Interstellar was awesome...
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                        • #42
                          [QUOTE=CanDB;5175214
                          It all started with the big BANG!
                          [/QUOTE]

                          The 'Big Bang' is a theory based on the idea that since the distances between galaxies, stars, and planets can be measured as increasing-- ever so slowly. If the increase was reversed so that they were decreasing then at some great length of time in the past they would converge as one super-dense mass which exploded under its own density.

                          Imagine, one super-dense particle smaller than a super-charged Dippin'-Dot that contained all the Universe's matter.
                          Last edited by Rancid; 04-25-2015, 06:18 AM.
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                          • #43
                            That's awesome.
                            "Stultum est timere quod vitare non potes." ~ Publilius Syrus

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