Dark Matter

Front

What is dark matter?

Back

A theoretical substance that makes up about 27% of the universe's mass-energy content, influencing the universe's structure and expansion.

Front

Why do scientists believe dark matter exists?

Back

Galaxies are spinning too fast for the visible matter to account for their rotation, suggesting the presence of unseen mass.

Front

Who is known for discovering that galaxies are moving away from us?

Back

Edwin Hubble, who provided evidence for the expanding universe.

Front

What does it mean that dark matter is a theoretical substance?

Back

It means there is evidence for its existence, but it hasn't been directly proven.

Front

What is the name of the radio telescope complex used to study dark matter?

Back

ALMA (Atacama Large Millimeter/submillimeter Array).

Front

In relation to us, what is the motion of most galaxies?

Back

Most galaxies are receding from us, indicating the universe is expanding.

Front

What percentage of the universe is made up of dark matter?

Back

Approximately 27%.

Front

What is the role of dark matter in the universe?

Back

It helps to explain the gravitational effects observed in galaxies and galaxy clusters.

Front

What evidence supports the existence of dark matter?

Back

Observations of galaxy rotation curves and gravitational lensing.

Front

What is gravitational lensing?

Back

The bending of light from distant objects due to the gravitational field of a massive object, like dark matter.