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If the hubble space telescope can see...?

thousands of light years away to distant galixes why cant we detect anything on the surface of other planets example why cant we detect life if it exist in our solor system or why cant the hubble space telescope detect/see the remains of the landing on the moon.

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  • Anonymous
    1 decade ago
    Favorite Answer

    First of all, the Hubble has imaged "things" that are billions of light years away (13.7 billion or so)... These are mostly galaxies, although there are some other extremely massive objects that have been imaged...

    Keep this in mind... Although we can see the Andromeda Galaxy with the naked eye (under good conditions), the individual stars within that galaxy are not resolvable with even the largest telescopes, including the hubble... This is because of the distances involved. Galaxies are VERY large, stars are comparatively small...

    The angular diameter of objects left on the moon are simply too small to be resolved by telescopes at this distance...

    Hope this helps...

  • 1 decade ago

    Size and resolution are the key factors. The galaxies seen in Hubble images are absolutely HUGE. With a little trigonometry it is clear that even the most distant galaxy in the observed Universe still covers a greater area of sky than any of the landers on the Moon. It's like being able to see the houses a few miles away with a pair of binoculars, but not the ant crawling up the wall just across the street.

    On top of that is the fact that Hubble images bright things against a dark background. Under those conditions a tiny faint star will still show up. However, trying to find a lander on the Moon would involve looking for one bright object against a bright background, so it won't show up.

  • Anonymous
    1 decade ago

    I think you have a rather exaggerated opinion of Hubble's capabilities. Galaxies are very large objects and are often visible to the naked eye. Like any telescope, Hubble makes them appear larger. Compared to galaxies planets are specks of dust on an aircraft carrier fifty miles away. They cannot be seen. They are too far away and too small. Planets are detectable by the effect they have on their star. When they pass in front of the star there is a slight diminution of light. There are also gravitational effects which cause a minor wobble. The only way life can be detected on a planet is to get spectrograms of their atmosphere. If there is significant oxygen then there is life. Or at least life similar to that which developed on earth where oxygen was a rather deadly waste product of early plants.

  • Anonymous
    5 years ago

    Exactly how would that stop any hoax? Hoax tehorists don't care one iota about evidence, they care about confirming and reconfirming common knowledge. They don't have any creativity or capability to do anything constructive so the only way they can feel good about themselves is to try to cast doubt on other people's achievements. If one of the important scientific missions of the Hubble telescope were to be cancelled to satisfy the whims of people with dubious scientific credentials (assuming the angle was right to get a perfect recognisable image and the resolution of the telescope was sufficiently detailed) all the hoax theorists will say is that the pictures were doctored. Hoax theorists and conspiracy theorists thrive on and exploit ignorance and have no interest in hearing answers to their questions just getting attention for themselves. Furthermore photos of the moon landing have been taken by orbiting satellites and that hasn't stopped the hoax theorists. Any attempt to address their concerns only gives them undeserved credibility. It would be cheaper and easier for everyone if these people simply got some decent qualifications. Universities and space agencies around the world have real science to be doing and shouldn't waste time and money indulging these people.

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  • B.
    Lv 7
    1 decade ago

    I has to do with the focal length of the Hubble scope. Hubble was designed for deep space observation so the optics are focus-able at far away distances. Something as close as the earth or the moon would require a huge and impractical range of adjustments and the Hubble would be more of a microscope than a telescope. It can see planets but it is still impossible to see through the atmosphere to the surface of planets like Venus, Jupiter, and Neptune. It would be like trying to see through Earth thunder clouds.

    http://photojournal.jpl.nasa.gov/index.html

    This is the NASA site for planets. If you click on a planet you can see pictures of what they look like up really close already.

  • Anonymous
    1 decade ago

    Picture yourself on top of a high rise building, and look at people, can you see if they are wearing glasses. Well, it's about the same, and the hubble telescope isn't made to find other lifeforms anway.

    And by the way, the hubble telescope can see at billions of LY away... The closest galaxy is Andromeda, which is 2 million LY away

  • Anonymous
    1 decade ago

    Ever tried to see something one meter away with a amatuer telescope. Did you see anything clearly. Obviously not.

    Hubble space telescope is designed to focus on far far away objects. Even Human eye can't see objects clearly within 25 cm.

  • Mark
    Lv 6
    1 decade ago

    The HST is for seeing faint things, not for magnifying. Don't be an idiot.

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