If the big-bang theory is true, the stars, planets, and other universal bodies were progressively formed, so there were much less stars than we have today, and the fomation of new stars is compensated by the death of others.
is it any or many????????
13
unkown
Science has advanced to the point where we can infer something about the entire universe. This has been a great challenge considering how unimaginably vast the universe is. The countless stars you see in the darkest sky constitute merely 3000 neighbors out of about 300,000,000,000 stars in our galaxy, and as many as 100,000,000,000 galaxies exist in the universe. Humans have always wondered: Has the universe always existed like we see it now, or did it somehow start all of a sudden? In the beginning of this past century, we found out in amazement that the entire universe is expanding. This led physicists to deduce that the universe started out in the finite past with a minuscule size. Realizing that the universe had a beginning, and awed by its vastness and its creations, people have asked: How did the universe begin? After all, we are here to be amazed by it because the universe eventually created lives like us. Now, after decades of observing and thinking, we have come to answer confidently the question of the origin of our universe... with what is known as the "big bang".
trillions If our galaxy with 2*1011 (two hundred billion) stars is an average size galaxy. and there are as many galaxies in the Universe as there are stars in our galaxy, then there are possibly 4*1022 stars in the Universe. But that is just a guess. There are most certainly more than 1018 stars.
Although the most scientists agree that the Universe began with the Big Bang, there were some who disagreed. Three Brithish scientists put forward the Steady State Theory. According to this theory, the Universe looks the same no matter the viewpoint, and the Universe has always looked like this. To put it simply, the Universe is uniform throughout both time and space, and had no 'begining'. The Steady State theory is simple, it had no answer to the many phenomena found in the Universe. As a result, it gradually lost its supporters.
approximately 200 billion trillion stars in the universe.
No. We have some theories that explain important aspects about how the Universe began. The current theories and understandings that we have get to fractions of second after the beginning, but we still have not gotten to the beginning yet. As to any purpose of the universe, science has not attempted to even discern such a thing.
If you mean asteroids within our Solar System, then stars. In the Universe, there will be many more asteroids than stars.
About 100 thousand million billion trillion
No. The universe contains billions of galaxies including our own, and each galaxy contains billions of stars.
As of October 2023, the universe is estimated to be about 13.8 billion years old. To convert this into seconds, we multiply the number of years by the number of seconds in a year (approximately 31.56 million seconds per year). This results in roughly 433 billion seconds, or 4.33 x 10^11 seconds, since the beginning of the universe.