Universe

Front

What is the brightest star in the night sky?

Back

Sirius, also known as the Dog Star.

Front

What is a white dwarf?

Back

A white dwarf is a small, dense star that is the remnant of a star that has exhausted its nuclear fuel.

Front

What unit of measurement do astronomers use for vast distances in space?

Back

Light Years.

Front

What determines the lifespan of a star?

Back

The mass of the star.

Front

What type of galaxy has a smooth, featureless light profile?

Back

Elliptical galaxy.

Front

What is the main component of stars?

Back

Hydrogen, which undergoes nuclear fusion to form helium.

Front

What is the process by which stars generate energy?

Back

Nuclear fusion.

Front

What is the difference between a spiral galaxy and an elliptical galaxy?

Back

Spiral galaxies have a flat, rotating disk with arms, while elliptical galaxies are more rounded and lack distinct features.

Front

What is a supernova?

Back

A supernova is a powerful and luminous explosion of a star, marking the end of its life cycle.

Front

What is the observable universe?

Back

The part of the universe that we can see and measure, limited by the speed of light.