Assume that the light curve shown below represents data from repeated transits by one planet in your sample. Which of the numbered points represents the time when the planet is directly in front of its star as viewed from Earth?

Which type of reaction is shown in this energy diagram? energy products activation energy reactants time o a. endothermic, because energy is released to the surroundings o b. exothermic, because energy is absorbed from the surroundings o c. exothermic, because energy is released to the surroundings o d. endothermic, because energy is absorbed from the surroundings

Estimate of the number of stars in our galaxy

The center of the milky way most likely contains a. empty space. b. a red giant star. c. a globular cluster. d. a supermassive black hole.