The smallest detail visible through Earth-based telescopes is about 1 second of arc in diameter. What size is this on the moon?
What size in km?
2007-11-29 13:18:42 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
The apparent diameter of the Moon is about half a degree.
The actual radius of the Moon is 1740 kilometers.
Carry on :-).
2007-11-29 13:22:58 · answer #1 · answered by Bob 7 · 1⤊ 1⤋
Using the Hubble Telescope you can resolve an area of about the size of a football field on the moon's surface---
See this:
http://sm3a.gsfc.nasa.gov/messages/676.html
2007-11-29 22:14:36 · answer #2 · answered by Bullseye 7 · 0⤊ 1⤋
I say 1.9 km. One arc second is 1/3,600 of a degree and the Moon is about 400,000 km away. Tan(1/3,600)*400,000=1.9
2007-11-29 22:42:12 · answer #3 · answered by campbelp2002 7 · 2⤊ 0⤋
Basically, that's a little less than a square mile on the moon's surface, on average.
2007-11-29 21:27:09 · answer #4 · answered by quantumclaustrophobe 7 · 1⤊ 0⤋
That's about 1.8 km. (1 arc-second = 4.848 µ radians)
2007-11-29 21:38:24 · answer #5 · answered by injanier 7 · 1⤊ 0⤋
1.9km
2007-11-29 21:38:34 · answer #6 · answered by an 4 · 2⤊ 0⤋