Milky Way Trivia: 10 Questions With Answers

This Milky Way trivia covers our galaxy's barred spiral shape, the Sun's place in the Orion Arm, the central black hole Sagittarius A*, how many stars it holds, dark matter and the coming merger with Andromeda. Ten questions with answers on our home galaxy.

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🎯 Daily Trivia Challenge • 🧠 10 Questions • ⏱️ 150 Seconds

Question 1 / 10 Time: 150s

Shape
What shape is the Milky Way?
Stars
About how many stars are in the Milky Way?
Location
In which spiral arm is the Sun?
Center
What lies at the center of the Milky Way?
Orbit
About how long does the Sun take to orbit the galaxy?
Name
Where does the name Milky Way come from?
Galileo
Who first saw that the Milky Way is made of stars?
Dark
What invisible substance makes up most of the Milky Way's mass?
Halo
What are ancient star clusters orbiting the galaxy called?
Future
Which galaxy will merge with the Milky Way in billions of years?

Explanations: answer key for all 10 questions

Q1: What shape is the Milky Way?
Answer: Barred spiral
A bar of stars crosses its center.
Q2: About how many stars are in the Milky Way?
Answer: 100 to 400 billion
Estimates vary widely.
Q3: In which spiral arm is the Sun?
Answer: Orion Arm
It is a smaller arm between larger ones.
Q4: What lies at the center of the Milky Way?
Answer: Sagittarius A*, a supermassive black hole
It has about 4 million solar masses.
Q5: About how long does the Sun take to orbit the galaxy?
Answer: About 230 million years
This is a galactic year.
Q6: Where does the name Milky Way come from?
Answer: Greek myth of spilled milk
Galaxy comes from Greek gala, milk.
Q7: Who first saw that the Milky Way is made of stars?
Answer: Galileo
He used a telescope in 1610.
Q8: What invisible substance makes up most of the Milky Way's mass?
Answer: Dark matter
It shows itself through gravity.
Q9: What are ancient star clusters orbiting the galaxy called?
Answer: Globular clusters
Some are over 12 billion years old.
Q10: Which galaxy will merge with the Milky Way in billions of years?
Answer: Andromeda
Earth would likely survive the merger.

Milky Way Trivia – Our Home Galaxy

The Milky Way is a barred spiral galaxy containing hundreds of billions of stars, along with gas, dust and dark matter. From Earth, we see it edge-on as a glowing band across dark skies.

The Sun sits in the Orion Arm, about 26,000 light-years from the center, and takes roughly 230 million years to complete one orbit. At the center lies Sagittarius A*, a supermassive black hole imaged in 2022.

The Milky Way is part of the Local Group of galaxies. It is slowly pulling in smaller galaxies and will eventually merge with Andromeda. Missions like Gaia are mapping its stars in 3D to reveal its history.

What This Quiz Teaches

This quiz is for space fans exploring the Milky Way.

What shape it is
How many stars it has
Where the Sun is
What lies at the center
What its future holds

Did You Know?

Light pollution hides the Milky Way from most people.
The galaxy's disk is only about 1,000 light-years thick.
Dinosaurs lived about one galactic year ago.
The Magellanic Clouds orbit our galaxy.
Many cultures called it a river in the sky.