The Sun diameter: 1,392,000 km (864,948.7 mi), (109 Earths) mass: 1.989x10³⁰ kg (4.39×10³⁰ lb), (333,000 Earths)
- This star is classified as a yellow dwarf, its diameter is 109 times the diameter of the Earth. It was formed around 4.5 billion years ago. In 4-5 billion years, it will become a red giant. By this time, its surface will reach beyond the Earth's current orbit. Nuclear fusion inside its core will stop, radiation pressure will cease to exists and it will eventually collapse into a white dwarf.
- One of the largest known stars of the Universe, a red giant 3,900 light-years away from the Earth. Its diameter is more than 1,400 times larger than that of the Sun, with nearly 2 billion kilometers (1,24×10⁹ mi) (although according to other calculations, its diameter is nearly 3 billion kilometers or 1,86×10⁹ mi). It would take an airplane traveling at a speed of 1,000 km/h (620 mph) about 700 years to complete one orbit around the star. If this star was in the center of our Solar System, Jupiter's orbit would be inside it. Canis Majoris will either become a black hole or a neutron star after it explodes as a supernova.