What unit of distance, equal to about 3.26 light-years, is commonly used by professional astronomers?

Learn More

science

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.

More Science Trivia Questions

What colorful marine invertebrate is known for its ability to split light into rainbow patterns and is popular in reef tanks?

What famous catalog of deep-sky objects, compiled by a French astronomer in the 1700s, contains 110 entries?

What type of coral does not rely on photosynthetic algae and must be fed directly?

What is the approximate diameter of the largest known star, UY Scuti, compared to our Sun?

What phenomenon causes stars to appear to twinkle when viewed from Earth's surface?

What type of filtration uses live rock and sand beds to naturally process waste in a marine aquarium?

Browse all science questions →