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How can the universe be 156 billion years in diameter if it is only 14 billion light years old?
The diameter must be expressed in a unit of distance/length - for example in light-years - NOT in years.
The answer is that the distant parts of the Universe are going away from us, faster than the speed of light. Inside its own local space, nothing can move faster than the speed of light. But in the case of the expansion of the Universe, you might say that space itself is expanding. This makes it possible for objects to move away from us faster than light.
What else can I help you with?
How big do astronomers estimate the universe to be?
There is no end. They Universe is always expanding due to the big bang. ----------------------------------------------------------------------------------------- No, the Universe actually closes in on itself. If you left from here in any direction, and you went far enough and fast enough, you would arrive right back here. In any case, the Universe does not have any boundaries.
How big is the solar system compared to the universe?
It is impossible to answer. The visible Universe is about 13.7 billion light years across and getting larger with every year. The Solar System is a mere 2 light years at most, a mere 6'850'000'000 of that number.
What is the farthest light has traveled?
The farthest light has traveled is 13.8 billion light years from Earth, which is the observable edge of the observable universe.
Is there no limit of the space?
No,there is no limit to space. For all practical purposes that is true ; BUT space can not expand faster than light and it only started to expand about 13.7 billion years ago So ... imagine a sphere 27.4 light-years across - and all space exists within it.
What is the diameter of Betelgeuse in light years?
Diameters of stars are not usually expressed in light-years. The term "light-year" is used for much larger distances. Its diameter is somewhere around a thousand times the diameter of our Sun, so that would be about 1.4 billion kilometers. Of course, you can convert that to light-years if you like.
How large is the known universe?
The observable Universe has a diameter estimated at 93 billion light-years.
How many galaxies are there since the universe is 93 billion light-years in diameter?
300 sextillion.
How huge is the universe?
The observable universe is thought to be a sphere about 93 billion light years in diameter (see related link).
How many light years is the diameter of the known universe?
The OBSERVABLE Universe has a diameter of about 93 billion light-years. "Observable" means that the light of anything beyond that hasn't had time to reach us, since the time of the Big Bang.
How big is the univearse?
The observable Universe has a radius of about 46 billion light-years; that would be a diameter of 92 billion light-years. The entire Universe is likely much bigger, but it isn't know how much bigger.
What is the longest known distance in light years?
That would be the distance from one edge of the Known Universe to the other. As the Known Universe is believed to be approximately 15 billion years old, that would be 30 billion light years in diameter.
How many galaxies are there in the universe since it's 93 billion light-years in diameter?
1.5 trillion.
What is univerese?
The universe is all existing matter and space considered as the cosmos. It is at least 10 billion light years in diameter,
How many miles across the universe?
The universe is 78 billion light years in radius, 156 billion in diameter. 1 light year is how long it will take you to travel at the speed of light so if it's 78 billion light years in radius then it would take you 78 billion years to travel that far. Also people have said that if you go far enough the number of partial combinations will run out and you will start to see exact replicas of the world you know and love.
Are all 100 billion galaxies in the observable universe up to 13.5 billion light-years away?
Yes, all 100 billion galaxies in the observable universe up to 13.5 billion light-years away.
Can any telescope map out the whole 13.7 billion-light year diameter universe?
The observable universe is significantly bigger than 13.7 billion light-years in diameter; it's closer to 14 billion parsecs radius, which gives a diameter of around 93 billion light-years.That said ... no, it can't. It can't even map the much smaller subset of the observable universe you describe, because large swathes of sky are blocked by the rest of the Milky Way galaxy; we can only see objects that are significantly outside the plane of the galaxy itself.
Will Hubble make a 3D map of at least 100 billion galaxies in the observable universe?
No, because it will be impossible for Hubble make a 3D map of at least 100 billion galaxies (i.e. 60 billion spiral and barred spiral galaxies, 20 billion lenticular galaxies, 15 billion elliptical galaxies, and 5 billion irregular/peculiar galaxies) in the observable universe, at distances up to 13 billion light-years; since the observable universe is 13.7 billion light-years in diameter.
