How Space Tech Is Changing Life on Earth: 2020 Edition

Stars can freeze under certain conditions, forming white dwarfs and neutron stars. White dwarfs crystallize into structures similar to diamonds, while neutron stars have solid crusts made of iron. Research and simulations have provided evidence of these phenomena, including the release of latent heat and star quakes.

What happens to a star like our sun when it runs out of fuel?

• It turns into a white dwarf.

• It becomes a black hole.

• It explodes as a supernova.

• It remains unchanged.

What is the primary composition of a white dwarf?

• Hydrogen and helium

• Iron and nickel

• Carbon and oxygen

• Silicon and sulfur

How does the crystallization process in white dwarfs compare to water freezing on Earth?

• It is similar but occurs at much lower temperatures.

• It is similar and occurs at the same temperature.

• It is similar but occurs at much higher temperatures.

• It is completely different.

What is the main difference between neutron stars and white dwarfs?

• Neutron stars are made mostly of neutrons.

• Neutron stars are less dense.

• Neutron stars are larger in size.

• Neutron stars are composed of hydrogen.

What is the crust of a neutron star primarily made of?

• Carbon and oxygen

• Iron nuclei

• Silicon and sulfur

• Hydrogen and helium

What is latent heat in the context of white dwarfs?

• The energy absorbed by a black hole.

• The energy needed for a substance to change phase.

• The energy released when a star explodes.

• The energy required to start nuclear fusion.

What phenomenon provides evidence of a solid crust in neutron stars?

• Star quakes

• Solar flares

• Black hole formation

• Supernova explosions