Space and Astronomy Megathread (MERGED) - Part 1

Discussion in 'SHH Community Forum' started by Thread Manager, Mar 17, 2014.

  1. KRYPTON INC.

    KRYPTON INC. Incorporated Kryptonian

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    #1076
    Micromind likes this.
  2. Marvolo

    Marvolo Well-Known Member

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    #1077
    RetrogradeOrbit likes this.
  3. RetrogradeOrbit

    RetrogradeOrbit Do I look like I'm joking?

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    4ACF5757-AEB6-4C27-8E74-622D2160CA0A.jpeg
    Has someone at the Chinese space agency been watching too much Star Trek...?
    Check out the top right corner of the image. :D
     
    #1078
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  4. 3rdstone

    3rdstone Original Manhunter

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    The United Federation of Planets's headquarter will not be in San Fransisco, but in Beijing.
     
    #1079
  5. Dr. Evil

    Dr. Evil Well-Known Member

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  6. KRYPTON INC.

    KRYPTON INC. Incorporated Kryptonian

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    Olympus Mons on Mars, from the ISRO Mars Orbiter.

    [​IMG]

    To put that into perspective...

    [​IMG]
     
    #1081
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  7. KRYPTON INC.

    KRYPTON INC. Incorporated Kryptonian

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  8. :eek:

    :eek: Well-Known Member

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  9. Dr. Evil

    Dr. Evil Well-Known Member

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    Still waiting for a Planet or Star to be named ABC12345

    :o
     
    #1084
  10. Flash525

    Flash525 The Scarlet Messenger

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    Out of curiosity, presumably at some point the Moon will leave our orbit and become just another rock in our solar system, be it's own orbit around the sun or it'll just drift off into the abyss.

    What happens to Earth at this point? No more tides? No more Werewolves?
     
    #1085
  11. Dr.

    Dr. Unknown Toronto member

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    Apparently not. Though the Moon is currently receding, this will stop in about 50 billion years. And in this more “stable” configuration, both the rotation of the Earth and the orbit of the Moon will take 47 days. Meaning: only one side of the Earth will ever see the Moon, and ocean tides will be “frozen” in place.

    At least… that’s what could happen theoretically.

    Long before then, most life will be dead (due to the cessation of photosynthesis - ~500 million years from now); and the Sun will expand and consume the Earth (~5 billion years from now).

    IOW, certain other issues will present themselves before we have to worry about the Moon being too far way. :cwink:
     
    #1086
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  12. Flash525

    Flash525 The Scarlet Messenger

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    We've got ~500 million years to colonise and terraform the Moon then? :p

    Thank You for the reply. I had assumed it would just drift off, though instead, it'll have burnt up - along with Earth long before it even attempts it's great escape. :eek:
     
    #1087
  13. wiegeabo

    wiegeabo Omniposcient

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    Not the moon, because that'll be consumed with the Earth. Need to get into Mars and beyond.
     
    #1088
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  14. Kahran Ramsus

    Kahran Ramsus Well-Known Member

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    It is sometimes disturbing to think about (although we'll all be long dead and not have to worry about anyways) how life is in its twilight years on Earth. The vast majority of the history of life on this planet has already happened. Roughly 87-90% is in the rearview mirror.
     
    #1089
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  15. Flash525

    Flash525 The Scarlet Messenger

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    It's scary, isn't it? To think how much life has preceded humanity, and yet here we are, ultimately still in our infancy. I don't think a lot of people quite comprehend just how long ago the Jurassic, Triassic and Cretaceous (and before) periods actually were.
     
    #1090
  16. Dr.

    Dr. Unknown Toronto member

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    More bad news for Krypton:

    HubbleSite: News - Young Planets Orbiting Red Dwarfs May Lack Ingredients for Life

    As part of their natural (and volatile) formation, red dwarf star systems may blast away their supply of water. This means that Earth-sized planets in such systems (even if they’re in the “Goldilocks zone”) could be dry and lifeless.

    As it happens, red dwarfs make up about three-quarters of all the stars in the Milky Way. So the hypothetical estimates for extraterrestrial life may have to be drastically reduced. :csad:
     
    #1091
  17. Flash525

    Flash525 The Scarlet Messenger

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    Tholian?

    Carbon based life may be at a disadvantage, but who knows what else is out there. ;)
     
    #1092
  18. jolldan

    jolldan Well-Known Member

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    Watched a little youtube doc about Apollo 13 last night really makes you stand back in awe at the level of ingenuity people have.
     
    #1093
  19. Flash525

    Flash525 The Scarlet Messenger

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    And then you watch a video of Trump and begin to question said ingenuity. :p
     
    #1094
  20. Kahran Ramsus

    Kahran Ramsus Well-Known Member

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    Well, sort of. That still makes up A LOT of potential habitable planets out there. The next most common type of star (K Class) is thought to be the most likely to produce life.
     
    #1095
  21. Kahran Ramsus

    Kahran Ramsus Well-Known Member

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    For sure, and even the whole Phanerozoic Eon is just a small part of the history of Earth. And it is especially difficult to picture when you start comparing two different points in time. Tyrannosaurus rex was closer in time to US than it was to animals like Stegosaurus and Apatosaurus. The Cretaceous Period on its own was longer than the whole Cenozoic Era so far.
     
    #1096
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  22. :eek:

    :eek: Well-Known Member

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    To get some perspective. If Earth's history were a year, then Homo Sapiens would have appeared 23:36 on December 31

    Earth’s Calendar Year: 4.5 billion years compressed into 12 months - Biomimicry 3.8
     
    #1097
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  23. Kahran Ramsus

    Kahran Ramsus Well-Known Member

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    Life appears on the 25th of February. Dinosaurs appear in mid-December. Complex life in any form doesn't appear until Thanksgiving. Human history (as opposed to prehistory) begins about 30 seconds to New Year's. That about says it all really.
     
    #1098
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  24. Dr.

    Dr. Unknown Toronto member

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    This is a variation of the “cosmic calendar” made famous by Carl Sagan. But in that model, the age of the entire Universe - rather than the age of the Earth - is compressed into a calendar year. As such, the dates and times of milestones are shifted slightly (as per the difference between 13.8 and 4.5 billion years).

    [​IMG]
     
    #1099
  25. Flash525

    Flash525 The Scarlet Messenger

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    Overlooked (or simply irrelevant) to so many people. It truly is astonishing when you think about it - and frightening too. In all that time, we're the only (known) species to have developed a sense of sentience in not only life on Earth, but (as we know it) life in the entire universe. Not that I believe we're alone in the universe for one minute, but when you factor things like this in, and the time scale of it, it truly does make you wonder what else is out there, or more specifically, what could have been a long, long time ago - and what may still come.
     
    #1100

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