Expert Quiz on Stars and Galaxies
A demanding set of five multiple‑choice items designed for seasoned astronomy enthusiasts.
Quiz Questions
Answer all questions below and test your knowledge.
- 1
What is the minimum mass a celestial object must have to sustain hydrogen fusion in its core?
- 2
In the Hubble sequence, which type denotes a spiral galaxy with a prominent bulge and tightly wound arms?
- 3
Which stellar remnant represents the most massive class of compact objects formed from single-star collapse?
- 4
A galaxy shows a redshift corresponding to a recessional velocity of 30,000 km/s. Assuming H0 equals 70 km/s per megaparsec, approximately how far away is the galaxy?
- 5
Which spectral feature is most characteristic of O‑type stars?
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