We are not yet capable of detecting life on planets around other stars. But as our technology develops, our first real chance of detecting such life will probably come from ________.
A) determining the orbital properties of the planets
B) examining high-resolution images of the planets made by orbiting telescopes
C) examining spectral lines from the atmospheres of distant planets
D) sending spacecraft to study the planets up close
Question 2
What do we mean by a geocentric model of the universe?
A) a model of the Milky Way Galaxy that has our solar system located at its center
B) a model designed to explain what we see in the sky while having the Earth orbit the Sun
C) the name given to sphere-shaped models that show all the constellations as they appear in our sky on the celestial sphere
D) a model designed to explain what we see in the sky while having the Earth located in the center of the universe
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