Decoding Dark Matter: A Fun Quiz on the Universe's Hidden Substance
Published Jul 2, 2026 · Updated Jul 16, 2026 · Editorial Team
Test your knowledge about dark matter, its role in the cosmos, and how scientists study it.
❓ 10 Questions
⏱️ 5 Minutes
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Question 1 of 100 correct
⏱️ 05:00
QUESTION 1
What percentage of the total mass-energy content of the universe is estimated to be dark matter?
All Questions in This Quiz
Here is every question waiting for you in this 10-question Science & Tech quiz. Play it in the interactive player above to lock in your answers, see your score and read the explanations.
What percentage of the total mass-energy content of the universe is estimated to be dark matter?
- A. About 5%
- B. About 27%
- C. About 68%
- D. About 95%
Which astronomer first inferred the existence of dark matter by studying the motions of galaxies in the Coma cluster?
- A. Edwin Hubble
- B. Fritz Zwicky
- C. Vera Rubin
- D. Subrahmanyan Chandrasekhar
What observational evidence most directly suggests dark matter exists in spiral galaxies?
- A. The brightness of supernovae
- B. The flat rotation curves of stars
- C. The cosmic microwave background anisotropies
- D. The redshift of quasars
Which of the following is NOT a leading candidate particle for dark matter?
- A. WIMP (Weakly Interacting Massive Particle)
- B. Axion
- C. Neutrino
- D. Graviton
Dark matter is called "dark" because it:
- A. Emits only infrared light
- B. Does not emit, absorb, or reflect electromagnetic radiation
- C. Is black in color
- D. Only exists in black holes
Experiments searching for dark matter deep underground aim to detect:
- A. Cosmic rays from the sun
- B. Neutrinos from supernovae
- C. Rare collisions of dark matter particles with atomic nuclei
- D. Gravitational waves from merging black holes
Approximately what fraction of the universe's total mass‑energy is dark energy?
- A. About 5%
- B. About 27%
- C. About 68%
- D. About 95%
Which space telescope has provided key data on dark matter distribution through gravitational lensing?
- A. Hubble Space Telescope
- B. James Webb Space Telescope
- C. Chandra X-ray Observatory
- D. Spitzer Space Telescope
The Bullet Cluster is famous because it:
- A. Shows dark matter and ordinary matter separated during a galaxy cluster collision
- B. Contains the largest known black hole
- C. Emits the most gamma rays of any cluster
- D. Is the oldest known galaxy cluster
Which statement about dark matter is true?
- A. It makes up most of the visible stars in galaxies
- B. It can be seen directly with optical telescopes
- C. It interacts primarily via gravity and possibly the weak nuclear force
- D. It is composed mainly of protons and neutrons
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