astronomy - How big a coincidence is the Sun and Moon having almost ...
27 Mar 2026 at 2:54am
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 much lux does the Sun emit? - Physics Stack Exchange
25 Mar 2026 at 4:18pm
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
Historically, how do we know that Earth moves around Sun? And it does ...
18 Mar 2026 at 11:47am
Questions: -- Sun is something we see on daily basis, so it would not be strange if humankind got curious to know about it, and made theories,observations,maths to prove it. How did Copernicus and others came up with the theory that earth moves around sun in elliptical orbit. How did they prove it?
How long until the sun cannot sustain human life on earth?
23 Mar 2026 at 9:54am
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...
Why do we say that the Earth moves around the Sun?
23 Mar 2026 at 12:45pm
3 The sun, moon, earth (and so on) all move around each other. The reason we say the earth moves around the sun is because the effects are more visible on a macro scale, and easier to predict with reasonable precision.
astrophysics - Why wouldn't the part of the Earth facing the Sun a half ...
27 Mar 2026 at 8:48pm
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 of the average solar day (Synodic Day), the time it takes the earth to rotate so that (on average) it is facing the sun at the same angle.
gravity - What will happen if a ball of ice with the mass of sun is ...
23 Mar 2026 at 3:16pm
A rather odd sun, to be sure (at least if you're an astrophysicist), because of the absurdly high oxygen content, but a sun nonetheless. Of course, the fact that your ball of ice has turned into a ball of glowing plasma doesn't stop you from dropping it into the sun.
What would happen if Jupiter collided with the Sun?
16 Mar 2026 at 2:02am
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 completely oppo...
Is the light from the Sun the same as the light from a bulb?
25 Mar 2026 at 4:22am
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, Greek word for the Sun) really does exist. discovery of Helium There isn't any of it (nor evidence of it) in light from a typical light bulb.
Are planets actually moving in elliptical orbits around the Sun or do ...
27 Mar 2026 at 9:09pm
Assuming an ideal two body case such as Sun and Earth, both are orbiting around the barycenter in two elliptical orbits. These two orbits are similar in geometry and scaled proportional to their relative distance from the barycenter.
WHAT IS THIS? This is an unscreened compilation of results from several search engines. The sites listed are not necessarily recommended by Surfnetkids.com.
27 Mar 2026 at 2:54am
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 much lux does the Sun emit? - Physics Stack Exchange
25 Mar 2026 at 4:18pm
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
Historically, how do we know that Earth moves around Sun? And it does ...
18 Mar 2026 at 11:47am
Questions: -- Sun is something we see on daily basis, so it would not be strange if humankind got curious to know about it, and made theories,observations,maths to prove it. How did Copernicus and others came up with the theory that earth moves around sun in elliptical orbit. How did they prove it?
How long until the sun cannot sustain human life on earth?
23 Mar 2026 at 9:54am
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...
Why do we say that the Earth moves around the Sun?
23 Mar 2026 at 12:45pm
3 The sun, moon, earth (and so on) all move around each other. The reason we say the earth moves around the sun is because the effects are more visible on a macro scale, and easier to predict with reasonable precision.
astrophysics - Why wouldn't the part of the Earth facing the Sun a half ...
27 Mar 2026 at 8:48pm
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 of the average solar day (Synodic Day), the time it takes the earth to rotate so that (on average) it is facing the sun at the same angle.
gravity - What will happen if a ball of ice with the mass of sun is ...
23 Mar 2026 at 3:16pm
A rather odd sun, to be sure (at least if you're an astrophysicist), because of the absurdly high oxygen content, but a sun nonetheless. Of course, the fact that your ball of ice has turned into a ball of glowing plasma doesn't stop you from dropping it into the sun.
What would happen if Jupiter collided with the Sun?
16 Mar 2026 at 2:02am
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 completely oppo...
Is the light from the Sun the same as the light from a bulb?
25 Mar 2026 at 4:22am
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, Greek word for the Sun) really does exist. discovery of Helium There isn't any of it (nor evidence of it) in light from a typical light bulb.
Are planets actually moving in elliptical orbits around the Sun or do ...
27 Mar 2026 at 9:09pm
Assuming an ideal two body case such as Sun and Earth, both are orbiting around the barycenter in two elliptical orbits. These two orbits are similar in geometry and scaled proportional to their relative distance from the barycenter.
WHAT IS THIS? This is an unscreened compilation of results from several search engines. The sites listed are not necessarily recommended by Surfnetkids.com.
