If the Universe is expanding does this mean that mass is expanding too?

Question

Is the mass of the universe increasing? Would this increase the strength with which gravity is pulling the universe back together?

Answer 1

Within the observational errors, no. The total mass of the universe seems to be constant. It can't be any other way if energy conservation holds and general relativity or something substantially similar to it is a good theory. Please note that I say "if", not "because". Science is not religious dogma, we do not take the conservation of mass and energy for granted... we just haven't seen a counterexample.

And the current measurements do not indicate that the universe will contract anytime soon, rather they indicate that it will expand ever faster, but not because of gravity or the absence thereof but because there is another repelling force called "dark energy". We do not know what this force is, only that it seems to make the universe accelerate at this moment (which is not the same as forever!). We do not know what it will do a hundred billion years in the future or if there is another force which could strengthen at a later time and lead to a future collapse.

Answer 2

The mass quantity of the Universe follows the Universal rule of the conservation laws.That means that the mass content of the Universe is conserved. That can only be true if the Universe is a finite entity. Einstein proved in his Relativity Theory that the Universe is FINITE. If the Universe is finite than anything with in its containment is also finite.
Gravity of the Universe as a function of the pressure of the substance of space tends to bring all masses together.
The temperature energy of the Universe tends to spread mass structures apart.
Therefore ;there is a tug of war between Gravity and temperature energy of the Universe.
Neverthe less the Universe remains a finite containment volume with restrains at its boundaries.
The Universe is not expanding its boundaries. It is rather some of the Galaxies that are expanding their boundaries within the Containment of our Creator's Universe.

Answer 3

IN ORDER ; the universe is expanding which means to us that atoms and molecules which make up substances and even our bodies are getting farther apart. this does not increase the mass of substances nor does the gravity involved increase or decrease. it has been estimated that the total amount of gravity in the universe would amount to 1 horsepower.

Answer 4

the amount of matter in the universe is decreasing by a very small amount, and the amount of energy is increasing by the same amount. this is because matter and energy are the same thing. a star fuses 2 hydrogen atoms to make a helium atom. the mass of the helium atom is slightly less than that of the 2 hydrogens, that missing mass is energy.

so really all their is is energy since matter and energy are the same thing. so no, the amount of energy in the universe is always the same because of the laws of conservation of mass and energy.

Answer 5

yes, and physics say that one day all the galaxies, solar systems and even down to molecules will be split apart becuse the universe is expanding.

Answer 6

No, it means that space is expanding, too.

Answer 7

yes,mass is expanding always

Answer 8

NO