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  • SueSueDio
    SueSueDio Posts: 4,796 Member
    To (roughly) quote the Hitch Hiker's Guide to the Galaxy, every one of us is "an insignificant dot on an insignificant dot."
  • Timshel_
    Timshel_ Posts: 22,834 Member
    NorthCascades wrote: »
    Aurora from space.

    aurora-borealis-from-space-10.jpg

    https://youtu.be/WL_-Zz7JDoA
  • cee134
    cee134 Posts: 33,711 Member
    Sharpless 308: Star Bubble

    v20noqkkd1fz.jpg
  • LittleLionHeart1
    LittleLionHeart1 Posts: 3,655 Member
    LittleHearseDriver wrote: »
    Halley' Comet
    Appears every 75-76 years, it's last appearance was in 1986. The next chance to see it will be in 2061.

    g4ivthso2z3s.jpg

    If see this again, because I did see it in 1986, I will be 96 years old. Someone take me outside. Or hopefully I can walk outside. Or put me by a window, so I can look out please. Thank you. :)
  • Vikka_V
    Vikka_V Posts: 9,563 Member
    "Star Bubble" I have never heard of this before...very cool, looking it up was my learning experience for the day
  • cee134
    cee134 Posts: 33,711 Member
    King of Wings Hoodoo under the Milky Way

    dditaknxps6q.jpg
  • cee134
    cee134 Posts: 33,711 Member
    NGC 2170: Still Life with Reflecting Dust

    74sw7yhn4jkz.jpg
  • SomebodyWakeUpHIcks
    SomebodyWakeUpHIcks Posts: 3,836 Member
    @LittleHearseDriver wrote: »
    Halley' Comet
    Appears every 75-76 years, it's last appearance was in 1986. The next chance to see it will be in 2061.

    g4ivthso2z3s.jpg

    We'll all be your client by then
  • NorthCascades
    NorthCascades Posts: 10,968 Member
    ninerbuff wrote: »
    Hard to imagine, but if you went to the beach and grabbed a handful of sand, each grain would signify a star in just our galaxy alone. Now imagine if you were told that the Universe's stars outnumber EVERY GRAIN OF SAND ON EARTH.

    And there are about as many planets as stars.
  • LittleHearseDriver
    LittleHearseDriver Posts: 2,677 Member
    SomebodyWakeUpHIcks wrote: »
    @LittleHearseDriver wrote: »
    Halley' Comet
    Appears every 75-76 years, it's last appearance was in 1986. The next chance to see it will be in 2061.

    g4ivthso2z3s.jpg

    We'll all be your client by then

    If I'm not old and senile by then.
  • cee134
    cee134 Posts: 33,711 Member
    M101: The Pinwheel Galaxy

    j31cb0s4tkia.jpg
  • SueSueDio
    SueSueDio Posts: 4,796 Member
    cee134 wrote: »
    M101: The Pinwheel Galaxy

    j31cb0s4tkia.jpg

    One of my favourite galaxies! So pretty. I LOVE M101 and have so many pictures of it. :)

    I think M88 might be my absolute favourite spiral galaxy though... <3


    ypjmj76pt7j7.jpg
  • cee134
    cee134 Posts: 33,711 Member
    Milky Way

    5o73jr82jek2.jpg
  • cee134
    cee134 Posts: 33,711 Member
    NGC 1333 - a reflection nebula located in the constellation Perseus

    dfla3odhgepk.jpg
  • cee134
    cee134 Posts: 33,711 Member
    Jupiter Swirling Pearl Storm

    This image, taken by the JunoCam imager on NASA Juno spacecraft, highlights a swirling storm just south of one of the white oval storms on Jupiter.

    yrle8iisigee.jpg
  • cee134
    cee134 Posts: 33,711 Member
  • FitJulian
    FitJulian Posts: 27 Member
    i just wish i was young (and healthy) enough to cut it on the Mars colony selection process (if they ever get there !)
  • cee134
    cee134 Posts: 33,711 Member
    FitJulian wrote: »
    i just wish i was young (and healthy) enough to cut it on the Mars colony selection process (if they ever get there !)

    Trying to colonized a planet where the own atmosphere wants to kill you seems like a bad idea to me.
  • SomebodyWakeUpHIcks
    SomebodyWakeUpHIcks Posts: 3,836 Member
    edited March 2017
    @LittleHearseDriver wrote: »
    SomebodyWakeUpHIcks wrote: »
    @LittleHearseDriver wrote: »
    Halley' Comet
    Appears every 75-76 years, it's last appearance was in 1986. The next chance to see it will be in 2061.

    g4ivthso2z3s.jpg

    We'll all be your client by then

    If I'm not old and senile by then.

    If???
  • SueSueDio
    SueSueDio Posts: 4,796 Member

    Ride the booster! :)

    (The camera spins a LOT during much of this video... I suffer from motion sickness and was pretty much okay watching it, but be aware. :) )

    https://www.youtube.com/watch?v=527fb3-UZGo
  • MelodyandBarbells
    MelodyandBarbells Posts: 7,724 Member
    NorthCascades wrote: »
    ninerbuff wrote: »
    Hard to imagine, but if you went to the beach and grabbed a handful of sand, each grain would signify a star in just our galaxy alone. Now imagine if you were told that the Universe's stars outnumber EVERY GRAIN OF SAND ON EARTH.

    And there are about as many planets as stars.

    Does this mean a lot of stars do not have planets? :'(
  • MelodyandBarbells
    MelodyandBarbells Posts: 7,724 Member
    cee134 wrote: »
    Milky Way

    5o73jr82jek2.jpg

    Wow, it looks like it's on fire. Though technically I guess stars are :D
  • Unknown
    Unknown
    This content has been removed.
  • Vikka_V
    Vikka_V Posts: 9,563 Member
    edited April 2017
    Here is my gist - please enlighten me of my misinformation :)
    JaneiR36 wrote: »
    Does this mean a lot of stars do not have planets? :'(

    The only “answers” I can find are on physics forums, (I never imagined myself perusing a physics forum, lol, but I was curious too )

    the lay-gist I got was:

    - apparently it is a very difficult question
    - Stars are likely to have planets
    - hard to say for certain, it’s difficult to prove that a star doesn’t have a planet
    - don’t have the technology to say for certain – the stars' planets may not be detectable, (there are a few different reasons for this)

    MeeseeksAndDestroy wrote: »
    Good question...every star should have some planets right?

    My lay-gist info says yes, in brief because of the way they both are formed

    Are there any reasons a star wouldn't have planets?

    - the star could have had a planet but something happened and it is no longer there (there are a few different reasons)
    - possibly the stars close to the black hole at the center of the Milky Way Galaxy don’t have planets (anymore I'm guessing?) because of their proximity to the black hole (I’m guessing?)
    - I also read something about how the first stars didn’t have planets ‘till later generations of stars had more metal elements in them, and then the stars could have planets
    - I read a suggestion that a Blue Giant would make having a planet difficult or very hard to detect


    Note: There are planets that don’t have stars - this is an easy to understand overview
    science.howstuffworks.com/planet-exist-without-host-star.htm
  • cee134
    cee134 Posts: 33,711 Member
    This VIS image shows a portion of a sand sheet with surface dune forms on the floor of an unnamed crater in Noachis Terra of Mars.

    4tk02p6u05eb.jpg
  • cee134
    cee134 Posts: 33,711 Member
    The international Space Station (ISS) passes over South America showing Argentina, and the Southern Andes. This angled image of the ISS Solar Arrays frames the Earth scene taken by astronauts of Expedition 50.

    uk8bhyq4816x.jpg
  • cee134
    cee134 Posts: 33,711 Member
    The image was taken in green light with the Cassini spacecraft wide-angle camera on Jan. 18, 2017. The view was acquired at a distance of approximately 630,000 miles (1 million kilometers) from Saturn.

    4lz3wh00jz5b.jpg


    Although only a sliver of Saturn's sunlit face is visible in this view, the mighty gas giant planet still dominates the view. From this vantage point just beneath the ring plane, the dense B ring becomes dark and essentially opaque, letting almost no light pass through. But some light reflected by the planet passes through the less dense A ring, which appears above the B ring in this photo. The C ring, silhouetted just below the B ring, lets almost all of Saturn's reflected light pass right through it, as if it were barely there at all. The F ring appears as a bright arc in this image, which is visible against both the backdrop of Saturn and the dark sky. This view looks toward the unilluminated side of the rings from about 7 degrees below the ring plane.
  • cee134
    cee134 Posts: 33,711 Member
    Astronaut Edward White during first EVA performed during Gemini 4 flight

    0ietu4djpg5d.jpg
  • cee134
    cee134 Posts: 33,711 Member
    A Sneak Peek into Saheki Secret Layers (Mars)

    p9t2x8d2jemo.jpg

    This image from NASA's Mars Reconnaissance Orbiter is of Saheki Crater, about 84 kilometers across, and located in the Southern highlands of Mars, to the north of Hellas Planitia. It's filled with beautiful alluvial fans that formed when water (likely melting snow) carried fine material, such as sand, silt and mud, from the interior crater rim down to the bottom of the crater. Two smaller craters impacted into the alluvial fan surface in Saheki, excavating holes that allow us to see what the fans look like beneath the surface. Exposed along the crater's interior walls, we can see that the fan is made up of multiple individual layers (white and purple tones in the enhanced color image) that were deposited on the floor (the green and brown tones). The brown, circular shapes on the fan layers are small impact craters.
  • cee134
    cee134 Posts: 33,711 Member
    g1wlxmu6q9cr.jpg

    The International Space Station continues its orbit around the Earth as Expedition 50 astronauts captured this night image of sparkling cities and a sliver of daylight framing the northern hemisphere.

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