The Universe

Question 1

Ordinary matter which is consisting PEN.

Answer 1

Baryonic Matter

Question 2

a source of anti-gravity, which is the reason of the expansion of the universe.

Answer 2

Dark Energy

Question 3

has gravity but cannot emit light

Answer 3

Dark Matter

Question 4

Tested of correct concepts/propositions that can be used to explain things.

Answer 4

Theory

Question 5

an early stage in the formation of a star resulting from the gravitational collapse of gases.

Answer 5

Protostar

Question 6

stars that fuse hydrogen atoms to form helium atoms in their cores; outward pressure resulting from nuclear fusion is balanced by gravitational forces

Answer 6

Main sequence stars

Question 7

the distance light can travel in a year; a unit of length used to measure astronomical distance

Answer 7

Light years

Question 8

a nuclear fusion reaction responsible for the energy produced by stars.

Answer 8

Thermonuclear reaction

Question 9

comprises all space and time and all matter and energy.

Answer 9

Universe

Question 10

Percent of Baryonic Matter

Answer 10

4.6%

Question 11

Percent of Dark Matter

Answer 11

24%

Question 12

Percent of Dark Energy

Answer 12

71.4%

Question 13

age of the universe

Answer 13

13.7 Billion Years Old