Posted at April 25, 2020
0

The Sun – Solar system

Facts about the Sun

The Sun is the star at the center of the Solar System. It is a nearly perfect sphere of hot plasma, with internal convective motion that generates a magnetic field via a dynamo process. It is by far the most important source of energy for life on Earth. Its diameter is about 1.39 million kilometers, or 109 times that of Earth, and its mass is about 330,000 times that of Earth. It accounts for about 99.86% of the total mass of the Solar System. Roughly three quarters of the Sun’s mass consists of hydrogen; the rest is mostly helium, with much smaller quantities of heavier elements, including oxygen, carbon, neon, and iron.

  • The Sun is all the colours mixed together, this appears white to our eyes.
  • The Sun is composed of hydrogen (70%) and Helium (28%).
  • The Sun is a main-sequence G2V star (or Yellow Dwarf).
  • The Sun is 109 times wider than the Earth and 330,000 times as massive.
  • The Sun’s surface area is 11,990 times that of the Earth’s.
  • The distance between the Earth and the Sun is an Astronomical Unit (AU)

Sun Profile

Age: 4.6 Billion Years
Type: Yellow Dwarf (G2V)
Diameter: 1,392,684 km
Equatorial Circumference: 4,370,005.6 km
Mass: 1.99 × 10^30 kg (333,060 Earths)
Surface Temperature: 5,500 °C

Tags: ,

0 Comment on this Article