Question

What is a light minute?

Answer 1

Hint: In astronomy, telecommunications, and relativistic physics, the light-second is a unit of length. It is equal to exactly 299,792,458 metres and is defined as the distance that light travels in open space in one second (983,571,056 ft).

Complete step-by-step solution:
A metric unit of length equal to the distance travelled by light in a minute, which is roughly 17,987,520 kilometres (11,176,920 miles).
The light-second is a useful measure for calculating distances in the inner Solar System because it closely matches the radiometric data used to calculate them. (There is a very slight correction for the effects of relativity for an Earth-based observer, so the match isn't perfect.) In the computation of current ephemerides, the value of the astronomical unit (approximately the distance between Earth and the Sun) in light-seconds is an essential quantity (tables of planetary positions). The light-second, like the second, can serve as the foundation for additional units of length, ranging from the light-nanosecond (299.8 mm or little under one international foot) to the light-minute, light-hour, and light-day, which are occasionally used in popular scientific journals. Because the definition of a year is based on a Julian year (not the Gregorian year) of exactly 365.25 days, each of exactly 86400 SI seconds, the more often used light-year is now defined to be exactly 31,557,600 light-seconds.
1 light minute is 60 light seconds.

Note:Earth's average diameter is 0.0425 light-seconds.
The lunar distance (the average distance between Earth and the Moon) is approximately 1.282 light-seconds.
The Sun's diameter is approximately 4.643 light-seconds.
The astronomical unit for the distance between Earth and the Sun is 499.0 light-seconds.