Results 1 to 7 of 7

Thread: 3 questions..

  1. #1
    Join Date
    Mar 2007
    Location
    <3
    Posts
    2,683
    Mentioned
    0 Post(s)
    Quoted
    0 Post(s)

    Default 3 questions..

    As I was sick and home from school today, I got some questions to answer until I get better from my dear dear teacher.

    As I left my book back in school, and google is somewhat useless when it comes to sciences specific questions, I hoped you guys could help me.

    Questions (Sorry for my bad grammar, tired)

    1. Explain why we see backwards in time when we look up in the star-filled sky.
    2. Explain why it's right to say that we all are made out of star-dust?
    3. Galileo Galilei says to be the first to experiment to try his ideas. How do you think his action effecteded the sciences development?

  2. #2
    Join Date
    May 2009
    Posts
    799
    Mentioned
    2 Post(s)
    Quoted
    16 Post(s)

    Default

    1 is quite logical. It's because the light just takes some times to travel lightyears, and what we see is just the light of those stars, that has been travelling for some time.

    ~caused

  3. #3
    Join Date
    Dec 2007
    Location
    Somewhere in Idaho
    Posts
    480
    Mentioned
    0 Post(s)
    Quoted
    0 Post(s)

    Default

    1. We see backwards because we don't see what is happening right now, we see what has happened several billion years ago.

    2. The most common element in the universe is hydrogen. It is theorized that all heavier elements come directly from fusion in stars. So Iron, nickle, ect was first formed in a star and then collected.

    Another thought on what the question might be looking for is that it is theorized that planets and stars where formed by giant gas clouds slowly collecting into one mass. so really, the earth and the sun are made up of the same thing. These clouds of gas are generally believed to come from stars that go nova.

    3. Galileo's biggest achievement was going against the pope and popular beliefs at the time (Even though he was friends with the pope). He was probably the first to not just accept what was commonly believed, but instead test, prove, and observe things to see how they really are.

  4. #4
    Join Date
    Nov 2008
    Location
    Melbourne, Australia
    Posts
    2,240
    Mentioned
    3 Post(s)
    Quoted
    11 Post(s)

    Default

    Quote Originally Posted by N1ke! View Post
    Explain why we see backwards in time when we look up in the star-filled sky.
    I'll explain it the best I can. You are looking in the past because light can only travel so fast, and it is measured in light years (How far light travels in a year). What you are looking at is the past because the light of the time now has not reached earth yet.

    Explain why it's right to say that we all are made out of star-dust?
    It is a theory of evolution that a meteor hit the earth and some how caused some organisms to grow.

    Galileo Galilei says to be the first to experiment to try his ideas. How do you think his action effecteded the sciences development?
    Not sure, sorry
    Click here to find out how to get full screen without members! | Click here to check out my Ultimate Bitmap Tutorial! Edited to work with Simba! |

  5. #5
    Join Date
    Jun 2006
    Posts
    3,861
    Mentioned
    3 Post(s)
    Quoted
    1 Post(s)

    Default

    Quote Originally Posted by cycrosism View Post
    It is a theory of evolution that a meteor hit the earth and some how caused some organisms to grow.
    Abiogenesis has nothing to do with the theory of evolution. They are separate theories, which are both separate from what the question is asking.

  6. #6
    Join Date
    Oct 2009
    Posts
    12
    Mentioned
    0 Post(s)
    Quoted
    0 Post(s)

    Default

    First, the reason we are looking "backwards" is because it takes time for the light of the stars to reach us.

    I will explain this in-depth. The stars are light-years are away from us. This means that it takes years for the light from those stars to reach us so that we can see them. Therefore, we are seeing the stars as they were years ago, not as they currently exist. If we could instantly travel to the star we were viewing, it would look different than it would be perceived on Earth.

  7. #7
    Join Date
    Aug 2009
    Location
    Inside the Matrix...yes it has me, and it has you too.
    Posts
    1,896
    Mentioned
    0 Post(s)
    Quoted
    0 Post(s)

    Default

    Quote Originally Posted by Slash View Post
    yes, this applies to everthing in the space.Suppose we look at the sun.This isnt the true position of the sun since time has flown by the time light reaches us.The time interval is about 8 minutes
    Please look at the date that the last post was made before you make a post. This was way back in november, don't gravedig please.
    NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN NYAN

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •