Is Lhotse in a single mountain or chain?

What are the three different methods use to create the illusion of depth? Why do some balloons pop when they are left in sunlight too long? Sunspots are regions of? How do solar panels work when the sun goes down? What planet is about 15 times more massive than earth? What do the different phases of the moon refer to? What are the 3 manned spacecrafts? What day of the week was June 13th 1980? Which theory is supported most by the finding that the moon is similar in composition to the outer portions of the earth? Does gas store energy from the sun? Why are the Apollo spacecrafts called Apollo? What does it mean when an astronomers observing starlight wa spectrograph notices shift at off lines to the red end of spectrum? What is the lifespan of the dwarf star? Where are the Galilean moons located? How do you use stars and sun to find direction? What is the most common gas in your solar system? What was the name of the command module that first landed on the moon? What instrument could sailors use to determine their location based on the position of the sun in relation to the horizon? Name of a dead star? When was the US space shuttle made?