Final answer:
When astronomers obtain identical results when studying an asteroid approaching Earth, their findings are valid.
Explanation:
Valid. When astronomers from different parts of the world study an asteroid approaching Earth and obtain identical results, the findings are likely to be valid. Astronomy, as an observational science, relies on multiple observations and new technologies to ensure the accuracy of hypotheses and conclusions. For instance, the NASA Spaceguard Survey uses wide-field telescopes to identify potentially hazardous asteroids.
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