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Why does the Sun shine brighter some days? [duplicate] 1) The sun seems brighter (more dazzling) if there is more scattering in the atmosphere The sun would actually look very small to us in the sky if there were no atmosphere (it's the same angular size as the moon) and most of the brightness seen in the direction of the sun is from small deflection rayleigh scattering
How much lux does the Sun emit? - Physics Stack Exchange I want to know how much lux the sun emits on a bright day - I don't mean when one stares directly at the sun, but rather when one walks casually outside when the sun is shinning brightly Now the
Nuclear fission in the Sun - Physics Stack Exchange The Sun's energy comes primarily from fusion of light elements in its core It is estimated that a very small fraction of mass of the Sun (~$10^{-12}$ times the abundance of hydrogen) is uranium (b
How long until the sun cannot sustain human life on earth? The sun will last, at its current brightness for 9 billion more years How long until the sun gets burned down to the point where it cannot sustain life on Earth anymore? Updated: I am more concer
What does the Moons orbit around the Sun look like? Here are some things I'm assuming when trying to tackle this question: The Moon's orbit must be concave toward the Sun The Moon speeds up as it goes toward the Sun, and it slows down as it moves away For an observer on the Earth, the Moon appears to orbit the Earth roughly $13$ times a year The Earth, the Moon, and the Sun remain in the same
What is actually meant by sun set and sun rise times, when taking . . . If this is the case, then when we read things like what time sun sets and rises on websites, books, calendars, other official times, et al… does that mean when we see for example ‘sun set at 18:35’ is the time denoting the actual sun set taking into account of the mirage or what is visible to us
What is the simplest way to prove that Earth orbits the Sun? Assume you're talking to someone ignorant of the basic facts of astronomy How would you prove to them that Earth orbits the Sun? Similarly, how would you prove to them that the Moon orbits Earth?
Effect of Suns gravity on an object on the Earths surface The sun, like the moon, produces tides on the earth The solar tides are weaker but big enough so that you can easily tell the difference between when the solar tides are adding to the lunar tides (a spring tide) vs when they are partly counteracting them (a neap tide) And tides are nothing but the part of the effect of an object's gravity that shows up because you're either closer or farther