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When using a telescope to observe stars and some say they are observing the past instead of the present What does this mean?
Gangel264
Because light also travels at a speed, by the time you see it, (depending on how far away it is) it probably happened a few or many years ago.
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∙ 13y ago
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When using a telescope to observe stars some say they are observing the past instead of the present because?
Because light takes time to travel from one place to another.You don't need a telescope to observe the past.When you look at the moon, the light that enters your eyes left the moonabout 1.28 seconds ago.When you look at the sun, the light that enters your eyes left the sunabout 81/3minutes ago.When you look at the nearest star outside the solar system, the light thatenters your eyes left the star more than 4 years ago.You see every other star as it used to be, even farther back in the past than that.When you look at the North Star (Polaris), the light that enters your eyes left itabout 323 years ago. If the North Star exploded on the day George Washingtonwas born, we'll see the explosion in 2055 .When you look at the refrigerator, 10 feet away at the other end of the kitchen,you're seeing it as it was about 0.0000000102 second ago.
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Why did the water stop boiling when the salt was added?
What did you observe! This is not a question we can answer as we were not present when the salt was added.
