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Vladimir79 [104]
3 years ago
15

Radar, the first link in the cosmic distance chain, is used to establish the baseline distance necessary for the second link, pa

rallax. What baseline distance must we know before we can measure parallax?
Physics
1 answer:
Elena L [17]3 years ago
7 0

Answer:

the Earth-Sun distance.

Explanation:

To measure parallax the base line distance that we need to know is the Earth-Sun distance. This distance is called 1 astronomical unit. This distance is 1.496×10^8 Km. So, this base line distance is necessary for the second link parallax.

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