Diarmid's Observatory

Ask John Harper

Astronomy Q & A

Ask John Your Question



General | Moon | Solar System | Stars | Constellations | Galaxies


General
  • NEW   Find an approximate value for the rate at which the moon orbits the earth.
    		•
  • NEW   What is the surface temperature of the gas giants like Jupiter? Isn't the sun technically a very hot gas Giant? Can you explain their distinctions? thanks John Ed Carreon
    		•
  • NEW   Why doesn't the inner planets have rings
    		•
  • NEW   So if the universe is expanding, as you said, "like a baloon" Then does that mean that space is expanding and for that matter, is matter expanding? Also, if you use your analogy of the baloon, even a baloon has it's center. Just trying to get a grasp of this phenomena. thanks Ed--
    		•
  • What is the difference between dark matter and dark energy and does the expansion of the universe mean that everything is moving away from the center of the universe. Where is the center of the universe? What is it called. What is there?
    		•
  • What's the value for the rate at which the moon orbits the earth. Assuming that the moon's orbit is circular.
    		•
  • are there any constellations that are close enough to earth that have earth-like or the same terra-forming possiblities of mars that might be better than mars as a choice (to terra-form)?
    		•
  • hi. wouldn't you agree that as our planet is in trouble...that nasa should think about making the moon earth-like. so that we have somewhere to go just in case. and that they should start very soon?!
    		•
  • Does lightning replenish the O-zone?
    		•
  • the contenents have moved together & apart at least once each way....are they moving now (extremely slightly) but is it possible for it to happen again?
    • 12345678910...>>



    General | Moon | Solar System | Stars | Constellations | Galaxies


    Moon
  • Find an approximate value for the rate at which the moon orbits the earth. Assume that the moon’s orbit is circular.
    		•
  • can nasa create an atmosphere for the moon using the same green-house gases theory they plan to use on mars?
    		•
  • here's my stupid question...is the moon's orbit circular?
    		•
  • What is the difference from your weight on earth then on the moon?
    		•
  • the moons gravity is is 6 times? than thaton earths surface
  • in the song "voodoo chile" by Jimmy Hendrix. Jimmy says: "on the night I was born the moon turned a bloody red." When "if ever" does the moon turn bloody red?
    		•
  • Why is the moon white
    		•
  • The average distance between the eart and the moon is 382,000,000 meters. Find an approximate value for the rate at which the moon orbits the earth. Assume that the moon's orbit is circular.
    		•
  • at what rate does the moon travel around the earth
  • how long does it take for the moon to orbit the earth
    • 12345678



    General | Moon | Solar System | Stars | Constellations | Galaxies


    Solar System



    General | Moon | Solar System | Stars | Constellations | Galaxies


    Stars



    General | Moon | Solar System | Stars | Constellations | Galaxies


    Constellations



    General | Moon | Solar System | Stars | Constellations | Galaxies


    Galaxies
  • what is the name of the galaxy we are in ?
    		•
  • What lies between the Andromeda and Milky way Gallexy? Is there a name for the expanse and are there any significant or interesting formations or astronomical phenomena between them?
    		•
  • in1963 what did maarten schmidt prove was not a star
    		•
  • if i travell at the speed of light how long would it take me to get to the nearesr galaxy?
    		•
  • what is the name of the galaxy in which earth is located? what kind of a galaxy is it?
    		•
  • what is the difference between a solar system and a galaxy
    		•
  • Hi. I was wondering if the furtherest planets & galaxies are trillions or more lightyears away are they still there or just reminants of what was?
    		•
  • how long those it takes for the sun to revolve around the milkyway.
    		•
  • What is the name of the galaxy in which Earth is located? What kind of a galaxy is it? Describe Earths location within the galaxy
    		•
  • what is the name of the galaxy in which Earth is located? What kind of galaxy is it? Describe Earths location within the galaxy
    		•
    123

    The Castle The Observatory