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If the sun was blue would the light here on earth appear different then it does?
Wiki User
∙ 14y ago
If the Sun was a class "O" star and thus appears "blue", then I think there would be no life on Earth to ask the question. Our star - the Sun - is a class G2 star and has a temperature range of around 5,500 kelvin whereas an "O" star is > 30,000 kelvin.
Wiki User
∙ 14y ago
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How would other galaxies appear to move relative to Earth if the universe were shrinking?
If the Universe was shrinking the galaxies would appear to be moving towards the Earth, and look more blue than they should. This is the opposite to the universe expanding where galaxies would appear to be moving away from the Earth, which we know due to "red shift". Andromeda would be the exception since it's directly moving towards the Milky Way.
What does a light year have to do with the sun and the earth?
A "light year" is a measure of distance, derived from "how far light can travel in one Earth year". Thus, if you shine a torch for the amount of time it takes the Earth to orbit the sun exactly once, that light would have travelled the distance of a "light year".
What would happen if the earth was tilted 30 degrees?
If the earth was not tilted at an angle of 23.5 degrees, there would not be the different seasons.
Light takes time to reach earth but according to Einstein it should not right?
No; according to Einstein it should take time for light to reach earth from the sun. Light is not instantaneous. The trip takes about 8 minutes. You may be confusing this with the theoretical result that if you were able to accelerate to the speed of light (you cannot) then for you, time would stop passing. You'd still be traveling at light speed, but you would have no experience of the passage of time. If you attained light speed and maintained it for 1000 years as observed from earth, you would decelerate to find that 1000 years just passed by on earth, as if in an instant, and you would find yourself very, very far from where you were only a moment before (from your point of view). This goes against what our intuition tells us about time; it is a 'relativistic' effect. And by the way, you would not have aged a moment over the thousand earth years you spent at light speed.
If the earth didn't tilt describe how our climate would be different?
we will not have seasons
How would a three-hour time exposure photograph of stars in the northern sky appear if earth did not rotate?
The stars would be brighter points of light. Without the Earth's rotation, the Earth would not be moving enough to create the lines of light that ordinarily appear in an uncorrected stationary time exposure. Depending on the clarity of the sky, the entire image could be grayed by scattered light (light pollution).
How would a three hour time exposure photograph of stars in the northern sky appear if earth did not rotate?
The stars would be brighter points of light. Without the Earth's rotation, the Earth would not be moving enough to create the lines of light that ordinarily appear in an uncorrected stationary time exposure. Depending on the clarity of the sky, the entire image could be grayed by scattered light (light pollution).
What is different between earth and sun?
The sun produces natural light and would kill us if we came near it, we would burn. Whereas Earth receives light from the sun.
What color would a strawberry appear to be under a white light?
it would appear black because no red light strikes it
What does the earth complete 365 of in a year?
In 365 and 1/4 days, the earth completes one revolution around the sun.
How would the moon appear to an observe on earth if the moon did not rotate?
it would still appear to rotate
How would the moon appear to an observer on earth if the moon did not rotate?
it would still appear to rotate
What color would a red object appear to be if you shone a green light on it?
it would appear black.
If earth and a star were diverging at a combined speed greater than that of light would that star not appear as a black hole?
No. We would be unable to detect it but you can detect black holes(by xrays and light emmitted from material they are sucking up). You would be unable to detect it because if the two were moving away at a combined speed greater than that of light then light from the star could never reach the earth.
Why does the moon become red during some lunar eclipses?
It's all to do with the wavelength of light and the density of the Earth's atmosphere. During a lunar eclipse, some light from the Sun is refracted through the Earth's atmosphere, which allows it to bend around the Earth and reach the Moon. The atmosphere is a well-known filter of blue light (this is why the sky is blue); only long wavelengths can pass through the atmosphere at the angle between the Earth, Sun and Moon, the others get trapped in the atmosphere. Therefore, the Moon is only exposed to red light. If the atmosphere was a different density then the Moon would appear a different colour.
What color would a red object appear to be if you shone only green light on it?
it would appear black.
What colour would a magenta fish with blue dots appear under green light?
Not much different. It probably would just have this green-ish tint to it.
