Answer:
que estuda os astros são os astronomos
Explanation:
Answer:
moon takes 27.3days to make a revolution around earth. Option D is the right answer
Answer:
Greenhouse effect
Explanation:
Greenhouse effect is the trapping of the sun's warmth in a planet's lower atmosphere, due to the greater transparency of the atmosphere to visible radiation from the sun than to infrared radiation emitted from the planet's surface.
Ground-based telescope can not detect planet in the brightness of stars
