a. being significantly closer to the stars.
b. having a baseline less than 2 AU.
c. having a baseline greater than 2AU.
d. having an orbital period less than one Earth year.
2007-10-22 04:20:58 · 4 answers · asked by Jacquisha R 1 in Science & Mathematics ➔ Astronomy & Space
C is the correct answer. The baseline from Mars would be ~3 AU as opposed to 2 AU for Earth. Putting your observatory on Callisto would give a baseline of ~10 AU but it would take you about 6 years to get to the other side of the orbit around the Sun. I hope this helps.
2007-10-22 04:37:54 · answer #1 · answered by Sciencenut 7 · 0⤊ 0⤋
C- having a base line greater than 2AU.
Parallax is observing how nearby stars appear to shift against the background of stars farther away as Earth orbits about the sun. Increasing the size of the orbit makes parallax that much more 'observable.'
2007-10-22 04:25:04 · answer #2 · answered by quantumclaustrophobe 7 · 1⤊ 0⤋
If you wanted to have a MUCH better parallax measurement, you wouldn't go into any solar orbit but simply launch the spacecraft on an escape trajectory with Jupiter flyby to gain as much speed as possible. This would allow you to get 10AU within 5 years.
2007-10-22 06:50:52 · answer #3 · answered by Anonymous · 0⤊ 0⤋
c. and:
e. having much less atmosphere through which to look
2007-10-22 04:45:01 · answer #4 · answered by Eratosthenes 3 · 0⤊ 0⤋