What is the primary reason that stars, including our Sun, shine so brightly?

They reflect light from the center of the galaxy

They are burning like a giant fire

What fundamental principle is expressed by Albert Einstein's famous equation, E=mc²?

The law of universal gravitation

The principle of quantum mechanics

It reflects red light from the Sun

Its surface is rich in iron oxide

It is covered in red vegetation

Blood rushing to the surface of the skin

A tiny muscle contracting at the base of each hair

The bending of light through a living organism

The ability of an organism to see in the dark

The production and emission of light by a living organism

The reflection of light off a living organism

Earthquakes and volcanic eruptions

A chemical compound called Capsaicin

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