Sun and wall-mounted solar energy storage liquid

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

Why can we see the moon when it is between the Earth and the Sun?

15 If it is really between the earth and the sun it is called a "solar eclipse" and and the moon''s shadow falls on the earth at certain places, because it is not large enough to cover the whole

How much lux does the Sun emit?

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?

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 surface

Moon vs Sun size and distance 400 times

The Sun and Moon seem to have the same size because of this amazing coincidence: the moon is 400 times smaller than the Sun and 400 closer than the Sun. Checking 400 from this

Is the light from the Sun the same as the light from a bulb?

The light from the Sun has a color blip, right where early atomic physics suggested the element with two protons in its nucleus would radiate. That element, called Helium (from Helios,

What would happen if Jupiter collided with the Sun?

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

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...

astronomy

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