astronomy - How big a coincidence is the Sun and Moon having …
May 3, 2020 · It's consensus that the very similar apparent sizes of the Moon and the Sun as seen from Earth is a coincidence (as already answered in this site). This provides us with …
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
What determines the surface temperature of the sun?
Jun 20, 2018 · The core temperature of the sun is on the order of 15 million degrees kelvin while its surface temperature is around 6000k. What are the main factors which determine the …
Why doesn't sun go all the way to the horizon during sunset?
Apr 14, 2023 · Everytime I see the pics of suset on beaches the sun appear to go all the way down to the surface of the sea (as shown in the picture) but when I see sunset in my region , …
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 …
Why isn't the Sun blue? - Physics Stack Exchange
The sun radiates like a black body and its spectrum is shown below. The sun does emit blue light but it also emits red and the other colors with almost the same intensity.
What would happen if Jupiter collided with the Sun?
Apr 27, 2018 · This question is inspired by a similar one asked on Quora. Let's say a wizard magicked Jupiter into the Sun, with or without high velocity. What happens? The Quora …
What is the simplest way to prove that Earth orbits the Sun?
Apr 17, 2015 · 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 …
astrophysics - Why wouldn't the part of the Earth facing the Sun a …
Dec 22, 2016 · Over half a year, this nearly 4 minute difference every day adds up to about 12 hours, the time it takes to rotate half way around and face the sun again. 24 hours is the length …
What is actually meant by 'sun set' and 'sun rise' times, when …
Feb 15, 2017 · 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 …