Is there a relation between $G$ and the age of the universe?
Answers
Answered by
0
The age of the universe(which according to the estimation of theirtime is the "false" billion years), When expressed in atomic units of time, is also . ... Has any progress been made in working out the relation betweenthis constant and the age of the universe
plz mark brainlist
plz mark brainlist
Answered by
0
Nope, it's not a coincidence. We can see most of the way back to the earliest possible galaxies. The universe would have been too hot to form stars and galaxies until a few hundred million years after the Big Bang.
It's nice confirmation that we don't see stars older than the Big Bang. In fact, for a while that was a problem. We calculate the age of the universe by looking at the rate of expansion. From that, we can backtrack to the point where everything must have been together. In the 1990s, the best estimates of the age of the universe were in the range of about 12 to 13 billion years, and we'd spotted quasars that were older than that. Fortunately, improved data from the WMAP satellite puts the figure a bit older, at about 13.8, comfortably older than the oldest stars.
It's pretty remarkable that we can see anything at all at that distance. They're incredibly faint, and so they must have been insanely bright. They're also receding very fast, so the light is redshifted well into the infrared. But thus far, the observations confirm what we'd expect: the oldest stars are few hundred million years younger than the universe itself.
It's nice confirmation that we don't see stars older than the Big Bang. In fact, for a while that was a problem. We calculate the age of the universe by looking at the rate of expansion. From that, we can backtrack to the point where everything must have been together. In the 1990s, the best estimates of the age of the universe were in the range of about 12 to 13 billion years, and we'd spotted quasars that were older than that. Fortunately, improved data from the WMAP satellite puts the figure a bit older, at about 13.8, comfortably older than the oldest stars.
It's pretty remarkable that we can see anything at all at that distance. They're incredibly faint, and so they must have been insanely bright. They're also receding very fast, so the light is redshifted well into the infrared. But thus far, the observations confirm what we'd expect: the oldest stars are few hundred million years younger than the universe itself.
Similar questions