Welcome to PhysLink.com - Your physics and astronomy online portal. Stay a while! Check out our extensive library of educational and reference materials. Also, check out our fun section!
How many astronomical units are in a light year?
Asked by: Justin Dopiriak
A good approximation would be:
1 light-year = 63240 AU (astronomical units)
Just for information, 1 light-year is equivalent to the distance travelled by light in 1 year moving in a vacuum. 1 light-year is about 9.4607 * 1015 metres.
1 astronomical unit (AU) is equivalent to the average radius of the Earth's orbit. 1 AU is about 1.4960 * 1011 metres.
Simple arithmetic calculation yields the answer that 1 light-year = 63240 AU to a good approximation.
Answered by: Ryan Leong, Undergraduate, NUS, Singapore
Here are our physics & astronomy bestsellers:
Magnetic Levitator - Classic
KonusScience 5 Way Microscope Kit
CHEM C2000 Chemistry SuperKit v2.0
Snap Circuits Jr.
Space Wonder Gyroscope
Mini Plasma Ball
Smart Robot 4M Kit
130 Electronics Projects Kit