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  • #31
    Proxima Centauri's Origins Could Mean Its Exoplanet Really Is Habitable
    After decades of uncertainty, it seems that astronomers may have found the strongest evidence yet that Proxima Centauri is indeed "gravitationally bound" to Alpha Centauri. This is interesting for many reasons, primarily because now we're pretty sure the Alpha Centauri system is a triple-star system, with two stars (Alpha Centauri A and B) orbiting closely and one oddball sibling (Proxima Centauri) with an extremely wide orbit.

    But with the recent discovery of a small rocky exoplanet in orbit around Proxima, this new finding will boost hopes that this little world may be habitable for life as we know it.

    Proxima Centauri is located around 4.25 light-years away making it the nearest star to Earth beyond our sun. The star's planet, called Proxima b, is approximately the same mass as Earth and orbits within the star's "habitable zone" — the region surrounding a star that's neither too hot or too cold for liquid water to exist on a planetary surface. Finding any planet within a star's habitable zone — regardless of the star's size or luminosity — will always be exciting as, if there is liquid water there, life could be possible. And discovering a (potentially) habitable world on our galactic doorstep is an incredible stroke of luck.
    ...
    http://www.space.com/35150-proxima-c...astronomy.html
    TANSTAAFL = There Ain't No Such Thing As A Free Lunch
    “War is merely the continuation of politics by other means” - von Clausewitz
    Present Current Events are the Future's History

    Comment


    • #32
      if you do not believe in evolution, what is your theory on how man 'came into the world' ?
      not how did the universe begin, how did man ''begin''?
      I would like to know the specifics
      did a fully formed man just 'appear'/etc ?
      thanks any replies

      Comment


      • #33
        Originally posted by Moulin View Post
        if you do not believe in evolution, what is your theory on how man 'came into the world' ?
        not how did the universe begin, how did man ''begin''?
        I would like to know the specifics
        did a fully formed man just 'appear'/etc ?
        thanks any replies
        If you are directing this toward me, I endorse most of evolutionary theory, but remain open to the concept of Intervention providing an assist upon occassion. For more details see this thread I've provided on the subject;
        http://www.armchairgeneral.com/forum...d.php?t=152502
        TANSTAAFL = There Ain't No Such Thing As A Free Lunch
        “War is merely the continuation of politics by other means” - von Clausewitz
        Present Current Events are the Future's History

        Comment


        • #34
          Originally posted by G David Bock View Post
          If you are directing this toward me, I endorse most of evolutionary theory, but remain open to the concept of Intervention providing an assist upon occassion. For more details see this thread I've provided on the subject;
          http://www.armchairgeneral.com/forum...d.php?t=152502
          all replies

          Comment


          • #35
            Why Most Planets Will Either Be Lush or Dead

            The Gaia hypothesis implies that once alien life takes hold, it will flourish.

            http://nautil.us/issue/44/luck/why-m...e-lush-or-dead
            TANSTAAFL = There Ain't No Such Thing As A Free Lunch
            “War is merely the continuation of politics by other means” - von Clausewitz
            Present Current Events are the Future's History

            Comment


            • #36
              Does the mysterious WOLF 1061c hold life? Astronomers say nearby exoplanet lies within the 'habitable zone'

              http://www.dailymail.co.uk/sciencete...hold-life.html
              TANSTAAFL = There Ain't No Such Thing As A Free Lunch
              “War is merely the continuation of politics by other means” - von Clausewitz
              Present Current Events are the Future's History

              Comment


              • #37
                How Did Life Begin? Dividing Droplets Could Hold the Answer
                https://www.wired.com/2017/01/life-b...s-hold-answer/
                TANSTAAFL = There Ain't No Such Thing As A Free Lunch
                “War is merely the continuation of politics by other means” - von Clausewitz
                Present Current Events are the Future's History

                Comment


                • #38
                  Cassini Sees Heat Below the Icy Surface of Enceladus

                  A new study in the journal Nature Astronomy reports that the south polar region of Saturn's icy moon Enceladus is warmer than expected just a few feet below its icy surface. This suggests that Enceladus' ocean of liquid water might be only a couple of miles beneath this region -- closer to the surface than previously thought.
                  The excess heat is especially pronounced over three fractures that are not unlike the "tiger stripes" -- prominent, actively venting fractures that slice across the pole -- except that they don't appear to be active at the moment. Seemingly dormant fractures lying above the moon's warm, underground sea point to the dynamic character of Enceladus' geology, suggesting the moon might have experienced several episodes of activity, in different places on its surface.
                  The finding agrees with the results of a 2016 study by a team independent of the Cassini mission that estimated the thickness of Enceladus' icy crust. The studies indicate an average depth for the ice shell of 11 to 14 miles (18 to 22 kilometers), with a thickness of less than 3 miles (5 kilometers) at the south pole.
                  "Finding temperatures near these three inactive fractures that are unexpectedly higher than those outside them adds to the intrigue of Enceladus," said Cassini Project Scientist Linda Spilker at NASA's Jet Propulsion Laboratory, Pasadena, California. "What is the warm underground ocean really like and could life have evolved there? These questions remain to be answered by future missions to this ocean world."
                  More information about this study is available from ESA, the European Space Agency, at:
                  http://sci.esa.int/cassini-huygens/5...nder-the-frost


                  https://www.jpl.nasa.gov/news/news.php?feature=6775



                  Credo quia absurdum.


                  Quantum mechanics describes nature as absurd from the point of view of common sense. And yet it fully agrees with experiment. So I hope you can accept nature as She is - absurd! - Richard Feynman

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                  • #39
                    Very interesting discover concerning a dwarf star and very close orbiting planets;
                    The Harmony That Keeps Trappist-1’s 7 Earth-size Worlds From Colliding

                    https://www.nytimes.com/2017/05/10/s...usic.html?_r=0


                    Math as music
                    TANSTAAFL = There Ain't No Such Thing As A Free Lunch
                    “War is merely the continuation of politics by other means” - von Clausewitz
                    Present Current Events are the Future's History

                    Comment


                    • #40
                      Being the more generic astronomy thread;
                      Multiverse: have astronomers found evidence of parallel universes?
                      https://www.theguardian.com/science/...llel-universes
                      TANSTAAFL = There Ain't No Such Thing As A Free Lunch
                      “War is merely the continuation of politics by other means” - von Clausewitz
                      Present Current Events are the Future's History

                      Comment


                      • #41
                        Interestingly, we keep finding more life here than we knew about;

                        Found: An Electric Blue Tarantula and More Than 30 Other New Species

                        A rich month of species-finding in the Guyana rain forest.

                        by Vittoria Traverso November 27, 2017
                        https://www.atlasobscura.com/article...ana-rainforest
                        TANSTAAFL = There Ain't No Such Thing As A Free Lunch
                        “War is merely the continuation of politics by other means” - von Clausewitz
                        Present Current Events are the Future's History

                        Comment


                        • #42
                          Humans Will Hear from Intelligent Aliens This Century, Physicist Says

                          Humans Will Hear from Intelligent Aliens This Century, Physicist Say
                          ...
                          Humans will make contact with aliens by the end of the century, theoretical physicist and futurist Michio Kaku told Redditers last week. However, Kaku said he wasn't sure whether we'd be able to communicate directly with this unknown extraterrestrial society — one that could run the gamut from hostile to pacifist, according to Kaku.

                          In his AMA on Reddit, Kaku responded to a question about alien civilizations, saying, "Let me stick my neck out. I personally feel that within this century, we will make contact with an alien civilization, by listening in on their radio communications. But talking to them will be difficult, since they could be tens of light years away. So, in the meantime, we must decipher their language to understand their level of technology. Are they Type I, II, or III??? [These represent three categories in the Kardashev scale, measuring technological achievement in civilizations based on their level of energy use for communication.] And what are their intentions. Are they expansive and aggressive, or peaceful."
                          ...
                          https://www.space.com/39817-intellig...ku-reddit.html
                          TANSTAAFL = There Ain't No Such Thing As A Free Lunch
                          “War is merely the continuation of politics by other means” - von Clausewitz
                          Present Current Events are the Future's History

                          Comment


                          • #43
                            Originally posted by G David Bock View Post
                            Proxima Centauri's Origins Could Mean Its Exoplanet Really Is Habitable
                            After decades of uncertainty, it seems that astronomers may have found the strongest evidence yet that Proxima Centauri is indeed "gravitationally bound" to Alpha Centauri. This is interesting for many reasons, primarily because now we're pretty sure the Alpha Centauri system is a triple-star system, with two stars (Alpha Centauri A and B) orbiting closely and one oddball sibling (Proxima Centauri) with an extremely wide orbit.

                            But with the recent discovery of a small rocky exoplanet in orbit around Proxima, this new finding will boost hopes that this little world may be habitable for life as we know it.

                            Proxima Centauri is located around 4.25 light-years away making it the nearest star to Earth beyond our sun. The star's planet, called Proxima b, is approximately the same mass as Earth and orbits within the star's "habitable zone" — the region surrounding a star that's neither too hot or too cold for liquid water to exist on a planetary surface. Finding any planet within a star's habitable zone — regardless of the star's size or luminosity — will always be exciting as, if there is liquid water there, life could be possible. And discovering a (potentially) habitable world on our galactic doorstep is an incredible stroke of luck.
                            ...
                            http://www.space.com/35150-proxima-c...astronomy.html
                            Could Proxima B Host Alien Life?
                            A Giant Flare May Have Wiped It Out Last Year
                            ...
                            The chances of finding life beyond our solar system faced a dramatic new calculation as of March 24, 2017, thanks to a gigantic outburst from one of the stars nearest to us. According to a new paper due to be published in The Astrophysical Journal Letters, the area around Proxima Centauri—which scientists believe could be a solar system—is looking a lot less appealing than it did before that date.

                            Proxima Centauri let loose a flare that sent charged particles flying toward any planet in its orbit. Although it lasted just 10 seconds, it made the star appear about 1,000 times brighter than usual and was about 10 times brighter than the most impressive flares from our sun that scientists have studied. The paper suggests those kinds of outbursts could be common—and deadly.
                            ...
                            http://www.newsweek.com/could-proxim...t-flare-819934
                            TANSTAAFL = There Ain't No Such Thing As A Free Lunch
                            “War is merely the continuation of politics by other means” - von Clausewitz
                            Present Current Events are the Future's History

                            Comment

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