The GAIA mission obtains astrometric data of stars with accuracy in some cases better than 10 microarcseconds. In terms of angular width, what is this equal to?
A. A human hair viewed from a distance of 20 miles
B. A human hair viewed from a distance of 200 miles
C. A human hair viewed from a distance of 2000 miles
D. A human hair viewed from a distance of 20000 miles
Answer:C
The GAIA mission obtains astrometric data of stars with accuracy in some cases better than 10 microarcseconds. In terms of angular width, what is this equal to?
A. A human hair viewed from a distance of 20 miles B. A human hair viewed from a distance of 200 miles C. A human hair viewed from a distance of 2000 miles D. A human hair viewed from a distance of 20000 miles