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The parsec is defined as the distance at which one astronomical unit subtends an angle of one arcsecond, derived from the parallax method of measuring stellar distances. While professional researchers prefer parsecs, most amateur astronomy resources and stargazing (Deals) guides use light-years because they are more intuitive. The nearest star, Proxima Centauri, is about 1.3 parsecs or 4.24 light-years away.
Learn more on Codexery: Parsec in Planets & Stellar Astronomy
More Science Trivia Questions
70
What famous catalog of deep-sky objects, compiled by a French astronomer in the 1700s, contains 110 entries?
69What type of coral does not rely on photosynthetic algae and must be fed directly?
61The red supergiant UY Scuti is one of the largest known stars. By current estimates, its radius is roughly how many times the Sun's?
59What phenomenon causes stars to appear to twinkle when viewed from Earth's surface?
56What type of filtration uses live rock and sand beds to naturally process waste in a marine aquarium?
53What is the nitrogen cycle process called that must occur before adding fish to a new saltwater tank?