TWO questions!! (Science/astrology related) 1) What are some disadvantages of using a space telescope?

2) Suppose astronomers are interested in obtaining an image of a large area in the sky. Which radiation should astronomers observe if they want to get images 24 hours a day, quickly and cheaply? Why?

Abeaker of water was heated and then placed on a bench in the laboratory. the water cooled until it was the same temperature as the air in the laboratory. which of these explains the mechanism by which the water cooled? a. heat energy was transferred from the water to the air. b. water molecules from the water formed warm water currents. c. the water molecules absorbed energy from the molecules in the air. d. the water released radiation until it contained no heat energy.