What Is the Universe Made Of?

Answer 1

Hi Decisiveliu

The most recent observations indicate the following:

* about 70% of the energy density of the universe is dark energy (for physicists this is an omega value of 0.7, where omega is the ratio of the actual density to the critical flatness density)
* about 30% (omega = 0.3) of the energy density is normal mass-energy

* of this 30%, about 27% is dark matter, and the remaining 3% is baryonic or luminous matter

* about 20% of the total dark matter mass is likely to be massive neutrinos (small weakly interacting particles), about 10% large non-luminous objects (eg black holes, neutron stars, brown drawfs, etc) and the remainder unsure as yet

* of the visible matter the vast majority is hydrogen (as suggested above), followed by helium, and then (relative) traces of other elements.


Hope this helps!
The Chicken

Answer 2

The Universe is made up of Time, Space, and Matter/Energy

All the matter in the universe is made up of all the elements from the periodic table

Answer 3

96% We Don't Know.

Only about 4% of the mass of the universe can be accounted for by all of the stars, planets, moons, interstellar dust, galaxies, black holes etc.

We know the rest is there because we can measure the effects of is gravity. We know it is not any particle or atom or such that we know, because we would see a known observable effect if it was.

So we mostly do not know.

Not a clue.

None.

A mystery.

Answer 4

Hydrogen, mostly. Then helium is the next most common. After that, I think it goes Silicon, Oxygen, Carbon, but I could be wrong about that.

Oh, as for the "Dark Matter" posting below, here's a link about that. http://en.wikipedia.org/wiki/Dark_matter

Answer 5

97% Hydrogen and the remaining 3% are the rest of the periodic table of elements

Answer 6

Particles

Answer 7

Matter, dark matter, anti-matter

Answer 8

tardyons. possibly tachyons also

Answer 9

gases, and stars, and planets, moons, asteroids, comets, ......