Dark Energy & Dark Matter Flashcards

All 5 cards in this deck

Give two examples of things about the universe that scientists still do not understand.

Dark mass (dark matter) and dark energy.

What is dark energy?

Something not yet understood that is thought to cause the expansion of the universe to accelerate.

What is dark mass (dark matter)?

Mass in the universe that cannot be seen and is not understood, detected only through its gravitational effects.

Which observations led scientists to suggest that dark energy exists?

Observations of supernovae since 1998, showing that distant galaxies are receding ever faster.

True or false? Scientists now understand everything about what the universe is made of.

False. There is still much that is not understood, for example dark mass and dark energy.