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it’s an astronomy question
Which method would you use to obtain the distance to each of the following? An asteroid crossing Earth's orbit B. A star astronomers believe to be no more than 50 light-years from the Sun A tight group of stars in the Milky Way Galaxy that includes a significant number of variable stars D. A star that is not variable but for which you can obtain a clearly defined spectrum

Respuesta :

Answer:

A. Radar would be the best tool for measuring distances to objects in the solar system.

B. A parallax measurement would be best for this nearby star.

C. Cepheids or RR Lyraes would be useful for determining the distance to this cluster.

D. The method using the H-R diagram and getting a spectrum to determine the luminosity class of the star.

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