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
Why isnt 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
How long until we fall into the Sun? - Physics Stack Exchange The energy output of the Sun is thought to have increased by about 30% since it formation (some 4 6 billion years ago) So the pressure from the solar wind should have increased in proportion, being equivalent to a minute reduction of the centripetal force that keeps the Earth in orbit But it also increases the orbital drag in the same proportion
Equation of Earths Orbit around Sun (ellipse) These two distances help identify the location of the sun on the major axis of Earth's elliptical orbit Assume that the major axis of Earth is on the x-axis a Find an equation of the Earth's orbit about the sun b With the given information, estimate Earth's speed around the sun in milers per hour
Why is 1 AU the distance between the Sun and the Earth? In the 1800's the AU was connected to: the time average of 1 divided by the Earth-Sun, and that is the reason Gauss's constant occurred (until 2012) in the calculation of the AU
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 completely oppo
How much iron would I have to shoot into the Sun to blow it up? So rest assured that our sun will not go supernova (though it will go through a red giant phase and swallow earth in about 5 billion years) The boiling point of iron is about 3000 K (5000 F) while the surface temperature of the sun is about 5500 K (10,000 F), so this comet-of-iron would evaporate en route to the sun's surface
Can Jupiter be ignited? - Physics Stack Exchange Our solar system itself contains two candidate "Earths" One is Jupiter's moon Europa and another is Saturn's moon Titan Both of them have the problem of having at low temperature as Sun's heat ca