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Relative sizes of planets and stars

Discussion in 'Sidewinders Bar & Grille' started by CalicoSkies, Aug 8, 2018 at 5:51 PM.

  1. CalicoSkies

    CalicoSkies Senior Stratmaster

    Jun 10, 2013
    Hillsboro, OR, USA
    Well it could be like a civilization that has an airplane, that might stop somewhere to watch a primitive tribe and then move on. Or maybe like in Star Trek, they might observe but interfere as little as possible so they don't negatively affect our development.

    But as for the cases of Betty & Barmey Hill, and Travis Walton, their stories have not been debunked as far as I know. So what do you suppose happened? I was reading something about Travis Walton one time, and it said during an interview (I think), he said "it's different when you know for sure" (regarding whether extraterrestrial aliens exist).

    I've also heard a theory. Incidents of UFO sightings and such really increased after world war 2 when the US dropped atomic bombs on Japan. I've heard a theory that extraterrestrials may have noticed and it makes them nervous, and they want our leaders to stop. Maybe a tinfoil hat thing though?
    Last edited: Aug 9, 2018 at 1:56 AM

  2. Thrup'ny Bit

    Thrup'ny Bit Grand Master Curmudgeon Strat-Talk Supporter

    May 21, 2010
    Sheffield, UK

    The search for intelligent life on Earth continues...
    Bowmap, circles, Mansonienne and 4 others like this.

  3. bdtunaman

    bdtunaman Strat-Talk Member

    Dec 8, 2017
    Buffalo ny
    I can’t wait to try alien drugs and watch alien porn!!!!!!
    circles likes this.

  4. roger@pennyflic

    roger@pennyflic Strat-O-Master

    Jul 4, 2013
    The funniest thing I ever heard, in relation to this topic, was when Homer Simpson was abducted by aliens. He immediatelly begins to remove his pants and says, "I suppose you'll want to probe me".
    Laugh ?, I almost shat.:)

  5. stratman323

    stratman323 Dr. Stratster Strat-Talk Supporter

    Apr 21, 2010
    London, UK
    Well that's dragged the tone of the thread down.....
    bdtunaman likes this.

  6. stratman323

    stratman323 Dr. Stratster Strat-Talk Supporter

    Apr 21, 2010
    London, UK
    Uranus was more fun when it was pronounced the old way. Once TV started to mention it more frequently, they came up with a new, less logical, but also less rude-sounding name. That was a shame.

    I guess that's also dragged the tone of the thread down.....
    circles likes this.

  7. rafasounds

    rafasounds Senior Stratmaster

    Aug 25, 2011
    I like to look at the Orion constelation when it's visible. The red star at one of its corners is Betelgeuse. Its size is relative to the distance between the center of our sun and the outer borders of the Saturn orbit. It's in its final stages of existence, and may already have gone supernova, but the light would take a long time to reach the earth. When it does, scientists say we'll see a bright sphere in the sky, even at daytime, about the size of the moon, for a few days. That would be interesting, but I wouldn't like to see Orion without a corner. It would become an imperfect rectangle.
    Mansonienne likes this.

  8. Monkeyboy

    Monkeyboy Dr. Stratster Strat-Talk Supporter

    In the same direction, there is more or less a similar orders of magnitude difference distance between the known universe
    and a proton, as there is from the Planck distance up to a proton (and what weirdness may lie within?).:cool:
    Last edited: Aug 9, 2018 at 9:35 AM
    Tone Deaf likes this.

  9. lonegroover

    lonegroover Senior Stratmaster

    Mar 5, 2016

    What's interesting about that image is that it's a tiny patch of the visible sky. Hubble detected about 10,000 galaxies in that tiny tile of sky (it covers one thirteen millionth of the entire sphere of the sky).

    So if it's typical, that implies that there are something like 130,000,000,000 galaxies observable from Earth, perhaps more with more sensitive apparatus in years to come.

    Our own galaxy is believed to consist of about 100 thousand million stars.
    circles and carver like this.

  10. Boognish

    Boognish Senior Stratmaster

    Jan 31, 2011
    I love astronomy! My wife and I went to west Texas last year and visited McDonald Observatory. I was so pumped up! We bought our tickets for the star viewing party months in advance. We get there and we are in this auditorium listening to a scientist speak before the star viewing and all of a sudden a huge clap of thunder! I be damned if it didn't start pouring rain for the next 2 hours! They cancelled the star viewing party and I was pretty bummed. Pouring rain in the middle of the desert!

    I'm really excited to see what Voyager 1 sends back once or if it ever gets out of our solar system. As of February of this year, it's approximately 13 billion miles away from earth. It was launched in 1977 and is the furthest man made device from earth...pretty incredible!

    circles and Mansonienne like this.

  11. Monkeyboy

    Monkeyboy Dr. Stratster Strat-Talk Supporter

    Myranus? I won't even read the colonoscopy challenge thread !

    But seriously, this is my kind of thread; I just don't have time to make big , long serious posts :cool:
    circles likes this.

  12. jvin248

    jvin248 Senior Stratmaster

    Jan 10, 2014
    Pluto seems to be orbiting the same star we are, not another planet.

    Part of the argument back then was that Pluto is not in the flat plane of the other planets but rather a tilted loop of its own. But that is easily caused by asteroid impacts -- Pluto is so small, and so far far away from the Sun that the gravitational force to keep it in line with the other planets can be easily overcome. The r^2 is the most important factor in the gravity equation for Pluto.


    Meteor Crater, Arizona -- this much damage (3,900 ft in diameter, 560 ft deep, and is surrounded by a rim that rises 148 ft above the surrounding plains, Wikipedia) was made by a rock less than 100 ft across.

    There are much bigger things out there that can knock a weakly controlled planet off course and ruin 'the rules' for what is a planet or not a planet.

    "A picture of Pluto or it didn't happen" :)


    ... Somehow this non-planet has five moons of its own.

    JayFreddy and Mansonienne like this.

  13. Jimi Lightning

    Jimi Lightning Senior Stratmaster

    Dec 21, 2016
    Ontario, Canada

  14. stratman323

    stratman323 Dr. Stratster Strat-Talk Supporter

    Apr 21, 2010
    London, UK
    I don't understand any of this. All I know is that the experts that decide such things decided some 10 or 12 years ago that Pluto was no longer a planet. Since they make these decisions & I don't, I'm not sure what else I'm supposed to say about it all.

  15. 808K

    808K Strat-Talker

    Apr 24, 2018
    Philly, USA
    My college Astronomy professor on the first day of class declared that henceforth he would call Uranus George. He said every time he said Uranus in previous classes the classroom would break into laughter and jokes.

    So all semester long when he said George...the classroom would still break into laughter and jokes.

    This astronomy info has always been mind blowing for me. Tripping on reality.
    circles likes this.

  16. stratman323

    stratman323 Dr. Stratster Strat-Talk Supporter

    Apr 21, 2010
    London, UK

    808K likes this.

  17. jstewart

    jstewart Strat-O-Master

    Feb 10, 2013
    Toluca Lake
    Why don’t you get to decide? Why did you surrender that capability?

    Just because IAU made a decision to change the rules, doesn’t mean you have to accept that. Did you know, that there is a push in the IAU to reclassify Pluto as a planet? Along with a bunch of other objects.


  18. stratman323

    stratman323 Dr. Stratster Strat-Talk Supporter

    Apr 21, 2010
    London, UK
    I surrendered that capability when I decided not to become an astronomer. I would sooner restrict my protests to subjects about which I know something. Or at least a little....

    I see little prospect of success in protesting about things where my total knowledge could be summed up by writing it on the back of a postage stamp.

    In a crayon.....
    Nadnitram likes this.

  19. Mr. Lumbergh

    Mr. Lumbergh needs you to go ahead and come in on Sunday, too. Strat-Talk Supporter

    Jan 10, 2014
    Initech, Inc.