Over the centuries, more precise astronomical observations led Nicolaus Copernicus to develop the heliocentric model with the Sun at the center of the Solar System.
The earliest cosmological models of the universe were developed by ancient Greek and Indian philosophers and were geocentric, placing Earth at the center. While the spatial size of the entire universe is unknown, the cosmic inflation equation indicates that it must have a minimum diameter of 23 trillion light years, and it is possible to measure the size of the observable universe, which is approximately 93 billion light-years in diameter at the present day. According to this theory, space and time emerged together 13.787 ☐.020 billion years ago, and the universe has been expanding ever since. The Big Bang theory is the prevailing cosmological description of the development of the universe. The universe ( Latin: universus) is all of space and time and their contents, including planets, stars, galaxies, and all other forms of matter and energy. Diameter of the observable universe: 8.8 ×10 26 m (28.5 G pc or 93 G ly) Īverage density (including the contribution from energy) (Apparent image area about 1/79 that of a full moon) The Hubble Ultra-Deep Field image shows some of the most remote galaxies visible with present technology, each consisting of billions of stars.
0 kommentar(er)
