What is actually meant by 'sun set' and 'sun rise' times, when taking ...
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 example …
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 almost exact total solar
How is distance between sun and earth calculated?
Feb 15, 2011 · Do you want to know both how the Earth-sun distance is measured and how the speed of light is measured? Those are completely different things. As I asked before, separate threads, please.
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 that the Moon …
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...
Where is nuclear fusion occuring in the Sun? - Physics Stack Exchange
Mar 15, 2019 · My understanding is that the sun is basically a sphere of hydrogen with a helium core, and that the hydrogen is undergoing nuclear fusion to produce helium. There are many images and …
How far away from the Sun does space start to be cold?
Jan 10, 2016 · How far from the sun do we need to be to pick up 100 W of power? Assume a person has 1 m 2 2 of surface area to absorb the solar power, which radiates at something like 1026 10 26 W …
Effect of sun turning into a black hole on earth [duplicate]
Suppose the sun would turn into a black hole. Now neglecting the effect on the living beings on the earth. would the sun suck up the earth or the earth's revolution would not be affected?
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 question has two …
Is the distance between the Sun and the Earth increasing?
Besides the moon, the sun has a tidal component for the earths oceans, and when that crashes into continents the energy absorbed comes from the potential energy of the sun-earth system. I am not …