What if Earth was transparent?
If 100\% transparent, then the Earth would be invisible. The mantle still emits light though … so you get a glowy red/orange surface type thing about 50–60km below you. You would see the stars on the other side of the planet.
Is the night sky transparent?
This means therefore that because there are no scattered light to reach the eyes of an observer during the night (to conceal the viewing of outer space) we get a clear (transparent) view of space, which is black. So, the sky is black during the night because it is revealing outer space.
When looking at the night sky many stars can be seen what is true about all the stars seen in the night sky?
There’s really no definitive answer to this question. No one has counted all the stars in the night sky, and astronomers use different numbers as theoretical estimates. Considering all the stars visible in all directions around Earth, the upper end on the estimates seems to be about 10,000 visible stars.
What Earth looks like without air?
The Earth’s sky would look like that. All unprotected plant and animal life on the Earth’s surface would die. We can’t survive long in a vacuum, which is what we’d have if the atmosphere suddenly vanished. It would be much like being “spaced’ or shot out of an airlock, except the initial temperature would be higher.
Is the sky transparent or opaque?
Despite the atmosphere containing so much air, it does not contain enough air to scatter 100\% of the light and therefore act as opaque. We thus see the sky as a whitish-blue semi-transparent layer.
Is the sky still blue at night?
The sunlight reaching our eyes has a high ratio of short, bluish wavelengths compared to medium and long wavelengths, so we perceive the sky as being blue. But even a black sky has some lightness. At night, the sky always has a faint color, called “skyglow” by astronomers.