Yes, current theory and observations suggest that the age of the universe is between 13.6 and 13.8 billion years (earth years).
However please note that a light year is the distance a beam of light will travel in one earth year.
It depends on what you did. You a mistake a billion ways because you can mess up a billions of times and ways
There are over 100 billion galaxies (with 100 billion+ stars (each containing 9 planets and 170+ moons)) in each one; as well as asteroid belts and nebulae) in the Big O universe (in reality; Paradigm City is a computer simulation). Their light has taken 13 billion years to reach Earth.
The Universe has an age estimated to be about 13.8 billion years.
There are estimated to be around a trillion comets in the Solar System. Assuming that to be "typical" and figuring roughly a billion trillion stars in the universe, that means the number of comets in the universe is probably in the vicinity of a billion trillion trillion (ten to the thirtieth power).
Approximately 2.3 billions of people
Mainly the discovery that the Earth is not the centre of the Universe, that the Sun is only one star in an enormous Galaxy of Billions of Stars and that there are Billions of Galaxies. Also that the Universe is expanding and the theory of the Big Bang start to the Universe 6.5 Billion years ago.
There is no real count because new stars are created from time to time. There are BILLIONS AND BILLIONS (as Carl Sagan might have said). There are billions of stars in our Galaxy and there are billions of galaxies. We don't have a very precise total. The usual estimate is: at least ten thousand billion billion. That's 1022 in scientific notation.
No-one can possibly know for sure, but the answer is probably billions. There are hundreds of billions of stars in our own Milky Way galaxy, many of which have solar systems of their own, and as many galaxies in the Universe as there are stars in our own galaxy (and the Milky Way is by no means a particularly large galaxy, just of average size). If you take all of this into account, the number of planets likely to be in the universe would be many billion.
We are not sure exactly how many galaxies are in the universe. There could very possibly be millions or even billions.
Estimates suggest there are around 100 billion to 200 billion galaxies in the observable universe. This number could be even higher as our technology and observation methods improve.
The observable Universe is estimated to have around 1011 (a hundred billion) galaxies. The entire Universe is much bigger than that, but it isn't known how much bigger. Perhaps it is infinite, in which case it might have an infinite number of galaxies.
There are 900 ten billions in nine trillions. This is because one trillion equals 100 billion, so nine trillions equal 900 billion. Since ten billion is one-tenth of a hundred billion, you can fit 90 ten billions into each billion, leading to a total of 900 ten billions in nine trillions.
The universe contains billions of galaxies and the Milky Way contains between 100 and 400 billion stellar systems (like the Solar system).
A billion billion.
There is one star in the solar system and millions to billions of stars in one galaxy and billions of galaxies in the universe. So i see no reason why they should disagree with you.
Our sun is one of between 200 and 400 billion stars in the Milky Way galaxy. There are literally untold billions of galaxies in the observeable universe. Our sun is just another star among billions of billions other stars. Some of which are known to have planets orbiting them.
Two thousand of them because two billion is: 2,000,000,000