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    do you know that when you look at the stars you are looking at the past

    +2  Views: 766 Answers: 4 Posted: 7 years ago
    Ducky

    Moderator
    slimjimpopo...Please stop arguing with the members here. When you ask a question, you will be answered according to what the member believes or has researched for you. You may not agree but you are still required to be polite. Thank you.

    4 Answers

    You see a thing as it was when the light coming from that thing started on its journey to your eye. If the trip takes a long time, then you see the thing as it was a while ago: then you look into the past. You can compare this to an instant picture of yourself that you immediately put in a letter to a friend. Your letter is delivered to your friend a few days later, so when he takes out your picture and looks at it, he sees what you looked like a few days ago. The delay in the arrival of light is therefore not a special characteristic of light, but shows up for any kind of transmission of information. Because light travels very much faster than mail, the travel time of light is not noticeable in your day-to-day life.
    So, you see any thing as it was a while ago. This holds for a very distant star, but also for a nearby planet or for a tree next to your house. The travel time of light is very short if the thing is nearby, and is very long if the thing is very far away. The travel time of the light indicates how far you look into the past if you look at the thing.
    Source(s):
    http://www.astro.uu.nl/~strous/AA/en/ant

    slimjimpopo

    sorry that is the wrong answer
    the closest star is 5 lightyears away from here so light will take 5 years to reach the earth there fore we receive light that came from that star 5 yaers ago
    slimjimpopo

    what is BS
    country bumpkin

    Moderator
    Great Answer, Romos!
    IOUATU!
    slimjimpopo

    how can you like a wrong answer
    ROMOS

    @slimjimpopo, have you actually read my answer and thought about it?
    slimjimpopo

    not really itis too long
    slimjimpopo

    you win
    you gave the right answer but mine is shorter
    help me get karma i am just from registering
    jhharlan

    Why did you ask a question you already know the answer to?
    slimjimpopo

    teachers teach by asking questions
    country bumpkin

    Moderator
    I gave you karma for your question, Master PooPoo!
    FISH-O

    I am not giving Master PoPo a TU. They are precious. He didn't teach me anything new, has a problem with spelling and is cheeky asking for Karma points.

    Good answer Kingly One.... Hail! Hail! King of the Fleas!
    witchway

    I agree and isn't it just a marvel!
    slimjimpopo

    i asked for karma when i did not know what it was
    ROMOS

    slimjimpopo, you're catching up to me.

    I am NOT looking at the past.  Don't be facetious, and stop being rude and obnoxious and argumentative with our venerated members. 


    Stars are made up of hydrogen gases that are held together by gravity. Stars are formed when a cloud of cold molecular hydrogen collapses and breaks into fragments and pieces. It is believed that most stars are in the ages of 1 billion to 10 billion years. Its age is highly dependent on its mass, having an indirect relationship. That is, the higher the mass density of the star, the shorter is its life span while stars having lesser mass densities tend to reach hundreds of billions of years. Stars vary in color depending on it mass and temperature. Red is deemed to be the coolest color while blue projects otherwise.


    Stars glisten at the skies at night. It is indeed an adorable thing to see. What makes stars a mystifying element in the universe is how light is formed for stars to shine. The reason why stars shine is that there is an internal process going on within each star. As held together by gravity, the stars unceasing react to this causing heat to be produced due to friction. With the intense pressure and increasing temperature, a nuclear fusion reaction occurs. After which, the atoms of helium and hydrogen fuse together, releasing a significant amount of energy that makes its way to the surface. Once it has reached the surface, they become visible light photons which are radiated into space. The star then shines after the process of nuclear fusion has successfully occurred out in space.
     




     

    Only if I can see that fast.........

    slimjimpopo

    i dont understand your answer
    jhharlan

    Oh, well........
    Benthere

    ....light travels at 186,000 miles per second !

    Slim, Yes. It's b/c of the speed of light that means that when we look at a star, it may have already burned up and doesn't exhist anymore.

    slimjimpopo

    whats this Nanu Nanu
    slimjimpopo

    really old guys you are


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