Astronomy 1.1 WORLD
What is the closest star to Earth, located at the center of our solar system?
75% of players answered correctly.
THE CORRECT ANSWER: The Sun
The Sun is the central star of our planetary system, a gigantic sphere of plasma whose mass represents approximately 99.8% of the total mass of the solar system. Located about 150 million kilometers from us, its light takes about eight minutes and twenty seconds to reach the Earth's surface. Without the thermal and light energy released by nuclear fusion reactions at its heart, life as we know it could never have appeared. The Sun regulates our seasons, the water cycle and plant photosynthesis. Although it appears immense to us, it is classified as a yellow dwarf, a medium-sized star compared to the giants of the universe.Its study allows astrophysicists to understand the inner workings of other distant stars and to monitor solar activity, such as flares, which can influence our power grids and communications satellites.