(a) Distance from earth
149,600,000 kilometers, or 92,960,000 miles
(b) Mean distance from center of galaxy
26,000 light-years
(c) Velocity around centre of galaxy
251 km/s
(d) Revolution period around centre of galaxy
225-250 million years (one Galactic year).
(e) Equatorial diameter
6.955 × 10 power 8 m
This is the equatorial radius, the diameter wud be the double of that
(f) Rotation period at the equator
25.05 days
(g) Core temperature
15.7 × 10 power 6 K
(h) Solar wind
A steady stream of charged particles that boil off the sun's outer atmosphere and which stream away along magnetic field lines which lead into the interplanetary medium. It is composed of charged particles such as protons , electrons and helium nuclei.
(i) The lovely Diamond Ring effect
large gush of light that shows up a few seconds before and after totality during a solar eclipse (caused by the last bit of sunlight that shines through valleys on the edge of the moon);
(j) Future of sun
The Sun does not have enough mass to explode as a supernova. Instead, in about 5 billion years, it will enter a red giant phase, its outer layers expanding as the hydrogen fuel in the core is consumed and the core contracts and heats up. Helium fusion will begin when the core temperature reaches around 100 million kelvins and will produce carbon, entering the asymptotic giant branch phase