1.) Who dens is a neutron star?
2.) Which type of galaxy is our galaxy?
a dwarf galaxy
an elliptical galaxy
a spiral galaxy
an irregulary galaxy
3.)Which distance do the light make in one year?
4.) Since how much years do the sun exist?
since 300,000 years
since 4,000,000 years
since 50,000,000 years
since 5,000,000,000 years
5.) When do heavy liek Uranium elements can be formed?
in a supernova
in the formation of a star
in a white dwarf
in a brown dwarf
6.) Which are the hotest stars?
7.) How does the energy is formed which a stars emits?
throught nuclear fission
throught nuclear decays
8.) When was the Big Bang?
since 3,000,000 years
since 20,000,000 years
since 500,000,000 years
since 15,000,000,000 years
9.) Which power is the weakest of the fundamental powers?
the weak power
the strong power
the electromagnetic power
10.) How much light-years is the Andromeda galaxy away of us?
11.) How long does red stars live?
12.) What is the final product of the proton proton cycle?
He-4 and two protons
He-4 and two neutrons
He-3 and two protons
He-3 and two neutrons
13.) What will our sun left when it dies?
a neutron star
a white dwarf
a black hole
14.) Why neutron stars are pulsares?
because their size change
because their temperature change
because their atmosphere change
because they emit radio waves
15.) Why is not our sun a star of the first generation?
because it is to bright
because it is to big
because it contains heavy elements
because the proton proton cycle is too fast