The Universe might well be older than 14 billion years, and we should stop putting a limit on it every time something new is discovered. This is one of the largest structures discovered in our Universe. It has over 10 billion light-years in length, and it is located well over 9 billion light-years away from us.
The observable Universe is 93 billion light-years across. This is because it is too big to have formed in the amount of time its light has reached us, and it may well one day prove that the Universe is even older than we think it is. This large structure will remain a mystery for scientists for an extended period of time.
Some even doubt its existence due to its paradoxical nature. However, even if we take out the existence of the Great Wall, many scientists agree that our Universe should be at a maximum age of This is the limit placed on the age of the Universe, but it remains to be seen. In theory, the star HD , or the Methuselah star, seems to be older than our Universe, but that would be an impossibility. No matter how you look at it, nothing should be older than our Universe, except perhaps something which occurred before the Big Bang.
The Big Bang, the event which created our Universe, was started by the existence of an initial singularity, which, in itself, might be considered older than our Universe. Another thing that may be older than our Universe would be the existence of another Universe. If we ever find out that other Universes exist outside our own, they or it might well be younger or older than our Universe. The Earth is estimated to be 4. Our galaxy, the Milky Way , might be a better comparison, as it is One of the oldest black holes ever discovered has been estimated to be The scientists studied an image of the oldest light in the universe to confirm its age of Alien civilization: Scientists are searching the universe for signs of alien civilizations: 'Now we know where to look'.
Obtaining the best image of the infant universe helps scientists better understand the origins of the universe, how we got to where we are on Earth, where we are going, how the universe may end and when that ending may occur, according to a statement from Stony Brook University.
Out of this world: 'Nearby' star may have three Super-Earths. By using observations from the Atacama Cosmology Telescope ACT in Chile, the new findings match the measurements of the Planck satellite data of the same ancient light. The life of a star depends upon its mass. High mass stars are much brighter than low mass stars; they rapidly burn through their supply of hydrogen fuel. A star like the Sun has enough fuel in its core to burn at its current brightness for approximately 9 billion years.
A star that is twice as massive as the Sun will burn through its fuel supply in only million years. A 10 solar mass star, a star that is 10 times more massive than the Sun, burns nearly a thousand times brighter and has only a 20 million year fuel supply. Conversely, a star that is half as massive as the Sun burns slowly enough for its fuel to last more than 20 billion years.
So if a globular cluster is more than 10 million years old, then all of its hydrogen burning stars will be less massive than 10 solar masses.
This implies that no individual hydrogen-burning star will be more than 1, times brighter than the Sun. If a globular cluster is more than 2 billion years old, then there will be no hydrogen-burning stars more massive than 2 solar masses.
The oldest globular clusters contain only stars less massive than 0. These low-mass stars are much dimmer than our Sun. This observation suggests that the oldest globular clusters are between 11 and 18 billion years old. The uncertainty in this estimate is due to the difficulty in determining the exact distance to a globular cluster and in our ignorance of some of the details of how stars evolve.
It Started with a Bang
0コメント