An astronomer surveying the sky toward a random region of the sky finds, by chance, the most distant galaxy ever detected. This is an example of
A) nonscience
B) discovery science
C) hypothesis-driven science
D) pseudoscience
B
Physics & Space Science
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Intensity of Sound: By how many decibels does the intensity level of a sound decrease when you triple your distance from a source of sound?
A. 9.5 dB B. 4.8 dB C. 6.0 dB D. 12 dB E. 3.0 dB
Physics & Space Science
A planet is located orbiting another star and its radius is about 3 times that of the Earth. It is:
A) a brown dwarf. B) a Jupiter. C) a Neptune. D) a super-Earth. E) an Earth.
Physics & Space Science
Why is the era of nucleosynthesis so important in determining the chemical composition of the universe forever after?
What will be an ideal response?
Physics & Space Science
What is meant by a cosmological distance?
What will be an ideal response?
Physics & Space Science