A lightyear is
A. When an object remains weightless in space for 365 days at a time
B. 100,000 miles per second
C. The distance that light travels in one year
D. A calendar year in which no new stars or planets are discovered
2007-12-21 09:08:43 · 8 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
light year is a distance; it is the distance light travels in a year; the speed of light is 300,000km/sec (or over 186,000miles/sec) and there are about 31,500,000 seconds in a year, so this distance is about 9.5 trillion km or 6 trillion miles
the answer is C
2007-12-21 09:17:23 · answer #1 · answered by kuiperbelt2003 7 · 1⤊ 0⤋
Answer C. The distance that light travels in one year.
Light travels at 186,000 MILES PER SECOND.
If you wished to figure out how many miles that is in one year,
you would multiply:
60 seconds/minute x 60 minutes/hour x 24 hours/day x 365 days/year x 186,000 Miles/second = ...
The answer is roughly Six Trillion Miles/Year.
2007-12-21 18:03:44 · answer #2 · answered by zahbudar 6 · 0⤊ 0⤋
Although I don't exactly, totally understand what exactly you are asking, a light year is approximately 6.6 Trillion Miles and that is the distance a beam of light travels in a year. Astronomers use that to measure the distance that stars are away from the Earth and other locations in the Universe. As well as the length of time it would take humans to get to any given point in space, if it were possible to travel the speed of light. But that is impossible with todays technology and Einstein said that if any thing travels at the speed of light, it too will turn into a beam of light.
2007-12-21 17:45:19 · answer #3 · answered by Anonymous · 0⤊ 3⤋
C obviously
2007-12-21 17:13:19 · answer #4 · answered by jeran 2 · 3⤊ 0⤋
c
2007-12-21 17:35:12 · answer #5 · answered by Master shake 3 · 0⤊ 0⤋
Kinda feeble isn't it? That we measure light by our rotation and call it a fact.
2007-12-21 17:39:23 · answer #6 · answered by edubya 5 · 0⤊ 4⤋
It's C.
2007-12-21 18:40:15 · answer #7 · answered by quantumclaustrophobe 7 · 0⤊ 0⤋
C
2007-12-21 19:34:48 · answer #8 · answered by Asker 6 · 0⤊ 0⤋