Exploring the Andromeda Galaxy with Hubble

What motivated astronomers to create Hubble's largest photomosaic of the Andromeda galaxy?

• To capture the entire Milky Way in one image

• To study the apparent size of Andromeda in the sky

• To explore the surface of the Moon

• To photograph the Sun's surface

How many individual snapshots were compiled to create the photomosaic of Andromeda?

• 100

• 600

• 300

• 900

What does the 2.5-billion-pixel image of Andromeda allow astronomers to study?

• The surface of Mars

• Individual stars and Andromeda's history

• The core of the Sun

• The rings of Saturn

What is the shape of Andromeda, and how does it compare to the Milky Way?

• Barred spiral, unlike the Milky Way

• Spiral, similar to the Milky Way

• Irregular, similar to the Milky Way

• Elliptical, unlike the Milky Way

In how many years is Andromeda expected to merge with the Milky Way?

• 2.5 billion years

• 6 billion years

• 1 billion years

• 4.5 billion years