Question

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Choose the description that best describes the radial velocity method of detecting planets orbiting distant stars.

A:Aim the powerful Keck telescope at the Keck Observatory in Hawaii with its two 10 meter optical mirrors at the star system until faint outlines of planets are detected.

B:A telescope can detect wobble from the effect that the planet's gravity has on the star.

C:Using satellite based telescopes in different locations astronomers are able use parallax calculations to determine if there are planets in orbit around a star.

D:When a planet passes between as star and an observer the luminosity of the star is reduced by a small but detectable amount.

Answer 1

Answer:

Exciting the atoms in the sodium layers creates an artificial 'star' for measuring atmospheric distortions and allows adaptive optics to produce sharp images of celestial objects positioned nearly anywhere in the sky."