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The universe has a very low mass density, implying that most of the universe is free space. The masses that has been discovered so far contains mostly stars, or gaseous constellations etc. Stars are chiefly hydrogen, which fuses together to form helium. The most abundant element in the universe is hydrogen, followed by helium. Other elements are found only in planets which are much less in mass than stars, and hence have negligible contributions. The empty spaces are devoid of mass may be, but they are filled with radiation of all sorts like; the microwave background radiation which is basically the "echo" of the big bang.

2. Eddington calculated that there are about 1073 electrons in the universe.

Since then we believe that Dark Matter may make up 80% of the universe, but that only adds one to the order above, 1074 maybe.

---------------------------------Torak----------------------

Although Dark-matter is very likely to exist it has been very difficult to prove it's existence so even now they're not sure!

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13y ago
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6mo ago

The universe is composed of matter (atoms, particles) and energy (electromagnetic radiation, dark energy). It consists of galaxies, stars, planets, and other celestial bodies that are interconnected by gravity. These components exist within the fabric of spacetime, which is the framework in which everything in the universe exists.

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Q: What makes up the universe?
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Is aluminum in the universe?

The Universe is everything . So, Aluminium makes up part of the universe: a tiny fraction of it.


What gas makes up most of the universe?

Hydrogen


What is the percentage of aluminum the universe?

Of all the baryonic matter, aluminium makes up about 0.005%. Considering that ordinary baryonic matter makes up about 4.9% of the universe, that would make aluminium constitute about 0.049 x 0.00005 = 0.000000245% of the mass of the universe.


What makes up 90 percent of universe?

None of the things that make up the universe measure up to 90 percent. The highest percent is 73 percent and that is dark energy.


How many percentage of the universe is hydrogen?

Hydrogen makes up about 75% of the universe by mass. It is the most abundant element in the universe and can be found in stars, gas clouds, and planets.


What element makes up most of the detectable mass in the universe?

Hydrogen is the element that makes up most of the detectable mass in the universe. About 75% of the normal matter in the universe is hydrogen.


What is the most prevalent element?

The most abundant element in the universe is hydrogen, which makes up about 3/4 of all matter. Helium makes up most of the remaining 25%. Oxygen is the third most abundant element in the universe.


What is the same about dark energy and dark matter?

there are the energy that mostly makes up this universe and its had been here since the beginning of the universe and also they are invisible.


What element is there most of?

The most abundant element in the universe is hydrogen. It makes up about 74% of normal matter by mass.


What subsystems make up the universe?

It is theorized that dark matter makes up 80 percent of the universe. Another theory is that 68 percent of the universe is dark energy, 27 percent is dark matter, and 5 percent is baryonic matter.


What is the state of matter that has positively and negatively charged particles that makes up most of the universe?

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What element is the most abundant in the universe and all stars are made of it?

Hydrogen is the most abundant element in the universe and makes up the majority of all stars.