Big Bang theory, if you were to take the premordial mass and put it on earth how much would it weight?

Question

Is the idea far fetched if we found out that the earth was formed first before the stars and Galaxies?

Answer 1

You could not do this as the Earth was not formed until sometime after the Big Bang occurred.

Answer 2

This is an excellent "what if" type question. One cannot put the mass of the universe on Earth, but what if we could...what would it weigh?

Unfortunately, no one knows. We have no idea what the mass of our known universe is. Check this out:

"The average mass density of the Universe, parameterized by {Omega}, is the most sought after single number in cosmology. It determines whether the Universe is open, expanding forever ({Omega} < 1) or closed, eventually recollapsing ({Omega} > 1). Unfortunately, after a half century of research {Omega} is still uncertain by at least a factor of five. Most of the mass is in the form of dark matter, and the precise relationship between its distribution and the distribution of the observable galaxies is still not known. We have the developed tools that may significantly improve the measurements of the mass of the Universe. We have performed state-of-the-art numerical simulations that provide complete dynamical information about both galaxies and dark matter, and our work has shown that the usual treatment of galaxies as point masses is unjustified. Additionally, we have proposed a method to determine the cosmic mass density from redshift-space distortions induced by large-scale flows in the presence of nonlinear clustering. " [See source.]

The "Unfortunately, after a half century of research {Omega} is still uncertain by at least a factor of five. " is key to this answer. To date, there is a five times swing in legitimate guesses as to what the mass of the universe might be. Without knowing what the mass is, we cannot speculate what it would weigh if we could put it on a scale on Earth's surface.

There are several reasons for not knowing what {Omega}, the mass of the universe is. First, there is the matter (pun intended) of dark matter. About 96% of the universal mass is invisible according to some calculatiions. This is why they call it "dark" matter.

Second, there is the issue of neutrinos. Are they massless or not? Given that the universe may be filled with neutrinos, the issue of whether they have inertial mass or not is a heavy issue. The results of which could determine if the universe will continue to expand or eventually start to collapse. It's that big an issue.

Finally, there is the issue that mass is not just mass, it's mass-energy. In its equivalent energy form, mass has no inertial characteristics. And that includes the characterisitics we typically associate with rest mass...like W = mg; where W = weight, m = rest mass, and g = acceleration due to gravity. The "mass" of the sun, for example, is constantly being converted into energy. So it's clear that {Omega} is constantly changing.

Despite the fact that the mass of our universe is unknown, the fact that Earth is just one of billions (10^9) of planets in billions of galaxies can lead us to say that the universe would weigh AT LEAST 10^18 times the weight of our Earth.

And that discounts the dark matter, which is about 96% of the mass of our observable universe. Throw in the dark matter and we're looking at a universal weight exceeding 10^20 time the wieght of Earth.

Answer 3

show that the universe has expanded from a state in which all the matter and energy in the universe was at an immense temperature and density. Physicists do not widely agree on what happened before this, although general relativity predicts a gravitational singularity (for reporting on some of the more notable speculation on this
The mass would be billions times massive, or heavier than the earth.

Answer 4

Cornell University estimates the mass of the "observable universe" (dark and luminous matter) is about 3 x 10 to the 55th grams, which is roughly 25 billion galaxies the size of the Milky Way.

Another group of sources has a wide variety of estimates:
http://hypertextbook.com/facts/2006/KristineMcPherson.shtml

Answer 5

it would weigh the exact same, because earth would weigh the same, since God made it all as it is today. The concept that slow changes occur over time here on earth or that the universe existed before the earth is just preposterous.

I'm just kidding

Answer 6

If you looked at it from that perspective the most rational answer would be infinite. With there being infinite/unknown amounts of matter in the universe there would therefore have to also be an infinite mass for these parts if they were so created.

Answer 7

I dont think there are enough Zeros to explain it