Tuesday, February 23, 2010

We can see stars because they are light sources. But why can we see satellites in clear night sky?

beause stars are not light sources they merely reflect the light from the sun back to our eyes, and a satelight can do very much the same thing, however since they are much closer than stars and are also tangibly between the sun and the earth we can see the silouettes in the daytime as well. but we cant see the stars in the day because they are father than the sun (or at least most of them) and so get ';lost'; or overpowered between the sun and our eyes.We can see stars because they are light sources. But why can we see satellites in clear night sky?
You sometimes can but may not know that is a satellite.We can see stars because they are light sources. But why can we see satellites in clear night sky?
Because they reflect sunlight and are really close to Earth. In fact satellites orbit the Earth, at a much nearer distance than that of the Moon.
They are reflecting light from the Sun, just like the Moon does.
Because they reflect light from other light source as our mother earth or her sister planets.





As satellites (natural) reflect light from its surface absorbing some amount as for its content its colour varies. As for man made ones they are of metallic surface which mainly reflect light.
Because they reflect the sun that shines on them
every once in a while a person gets to see an object which to the naked eye looks just like a very slow moving shooting star.


this is nothing but a man made satellite.


every man made satellite's basic structure includes huge solar panels which are the source of the satellites energy. These panels must be inclined perpendicularly to the sun so as to get the maximum power conversion in the panel. this means at most instances, the satellite's panels are inclined at an angle to the sun which means that it reflects all that sunlight to earth after absorbing a little for electricity


this sunlight gets focused on earth, and thus the satellite can be seen for a short time span on earth by an observer who falls within the focus of the sunlight.this happens both in daytime and at night, but since the sun is brighter than partially absorbed reflected sunlight, these satellites are visible only at night

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