Is the universe that we see at night real?

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  1. Vegas Elias profile image60
    Vegas Eliasposted 11 years ago

    Is the universe that we see at night real?

    Are all the stars et cetera that we see at night with the naked eye for real?

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  2. MickS profile image61
    MickSposted 11 years ago

    Everything we are aware of through our sense perceptions is real in the mundane universe.

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  3. syzygyastro profile image80
    syzygyastroposted 11 years ago

    It is a question of when all the light from all around impinges upon our senses. To us it is real, but the light from various sources from reflections off glass close by to the furthest reaches of the cosmos has different ages. The light we see from the sun is what the sun was like 8 and 1/2 minutes ago. Since then the real sun has changed and is not in the sky where we see it due to the time lag. It is the same for the rest of the cosmos. We see galaxies as they were millions of years ago. We don't know what they look like today and have no way of telling due to the limit of the velocity of light. The cosmos we see is real, but it is as it was when the light left and the time it took to reach us. This varies by distance. Further, as some of the cosmos is moving toward us and some moving away, the light is blue or red shifted. In the world of sound where we can hear pitch change as something moves past us, we get a sense of this change.

    Other hints of the reality come in the form of meteorites that fall from the sky to earth. These are real enough and can be physically measured. Yes indeed, the cosmos we see at night is real, but there are catches.

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  4. Cobrafan profile image80
    Cobrafanposted 11 years ago

    To an extent, what you see at night is real. There is a chance that any star you look at is now "burnt out" as most stars take thousands to millions of years for their light to reach our little planet.

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