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  what colour is the Sun?
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what's the mass of the Sun?


The Sun has a mass of 2,000,000,000,000,000,000,000,000,000,000 kg. Wow, that’s an incredible 330,000 times the mass of the Earth.


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The Sun is losing mass at the rate of about 10 million tonnes per second because it is using its hydrogen fuel in the core and at the same time is continuously blowing off some of its atmosphere. However, even at this rate it would be a very long time before the Sun ran out of mass.


More Vital Statistics

How long will it be then before all the Sun's mass is gone?
Divide the total mass by how much mass it loses each second.
Mass/loss-rate = (2 x 1030 kg) / (1010 kg/s) = 2 x 1020 seconds, or just over 6 thousand billion years.


Don’t worry though, a lot of other things will happen to the Sun long before this loss of mass becomes a problem.


The Sun is very greedy. It has 99.85% of all the mass in our solar system.




Here is movie from STEREO of the solar wind flowing out from the Sun.


To find out more about the STEREO spacecraft follow this link.


what colour is the Sun? | how hot is the Sun? | how bright is the Sun?
how big is the Sun? | how old is the Sun

what is the Sun made of? | does the Sun rotate?




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