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easyQ. No. 16986-which-universe-term-is-correctly-associated-with-scientific-fact-approximately-9-46-trillion

Which Universe term is correctly associated with scientific fact: “approximately 9.46 trillion kilometres”, and also with “a unit of distance”?

Last Updated: 27 Aug 2026

AMilky Way

BAndromeda Galaxy

CSun

DLight-year

Correct Answer: Light-yearYour Answer: D

Explanation

Correct Answer: Option D — Light-year. Light-year is correct because it is approximately 9.46 trillion kilometres. It is also associated with a unit of distance. Together, these two facts identify Light-year precisely within Universe. Why the other options are incorrect: Option A — Milky Way: Milky Way is it belongs to the Local Group. It is also associated with a barred spiral galaxy, so these facts identify Milky Way rather than Light-year. Option B — Andromeda Galaxy: Andromeda Galaxy is it belongs to the Local Group. It is also associated with a spiral galaxy also catalogued as M31, so these facts identify Andromeda Galaxy rather than Light-year. Option C — Sun: Sun is sunlight reaches Earth in about 8 minutes 20 seconds. It is also associated with a G-type main-sequence star, so these facts identify Sun rather than Light-year. Exam Takeaway: Link Light-year with “approximately 9.46 trillion kilometres” and “a unit of distance” for quick revision.

Important Notes

Light-year is a unit of distance.
It is associated with used for distances between stars and galaxies.
A key feature is that the distance light travels in one year.
Another useful fact: approximately 9.46 trillion kilometres.
Exam trap: Light-year should not be confused with Milky Way, which is it belongs to the Local Group.

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