We see it as a large round red ball only because we are much closer to the Sun than to any of the other stars. Other stars may be larger, brighter, smaller or fainter than our Sun but they are so very far away that we only see them as points of light in the night sky.
The sun is made almost entirely of hydrogen, with a little helium and a few heavier gases including oxygen - and there's even some iron in there too. Light from the Sun reaches the Earth in just 8 minutes!
The temperature inside the Sun can reach 15 million degrees Celsius:At the Sun’s core, energy is generated by nuclear fusion, as Hydrogen converts to Helium. Because hot objects generally expand, the Sun would explode like a giant bomb if it weren’t for its enormous gravitational force.The Sun generates solar wind:This is a stream of charged particles, which travels through the Solar System at approximately 450 kilometres per second. Solar wind occurs where the magnetic field of the Sun extends into space instead of following its surface.