Characteristics and Discoveries of Dead Galaxies

Astronomers have observed the oldest dead galaxy using the James Webb Space Telescope. This galaxy existed when the universe was only 700 million years old. A dead galaxy is one that can no longer form new stars due to a lack of gas. Factors such as supermassive black holes, star interactions, and new stars consuming gas contribute to this depletion. Researchers are puzzled by the fast lifecycle of stars in this galaxy, which lived and died over 13 billion years ago.

What tool was used to discover the oldest dead galaxy?

• Hubble Space Telescope

• James Webb Space Telescope

• Spitzer Space Telescope

• Chandra X-ray Observatory

At what age of the universe did the oldest dead galaxy exist?

• 1 billion years

• 700 million years

• 5 billion years

• 10 billion years

What is a key characteristic of a dead galaxy?

• It is located in the Milky Way.

• It is rapidly expanding.

• It lacks the gas needed to form new stars.

• It has an abundance of new stars.

Which of the following is NOT a factor that can cause gas to disappear in a galaxy?

• Supermassive black hole

• Presence of dark matter

• New stars consuming gas

• Stars violently interacting

What is puzzling astronomers about the newly discovered dead galaxy?

• Its unusual color

• Its size compared to other galaxies

• The rapid lifecycle of its stars

• Its location in the universe