What is a seopena?

What is man made echolocation called? Who created an attachment for the arm of the space shuttle used to capture satellites? What are the 3 primary colours of light? What is the objective focal length of the hubble space telescope? What happens when the moon passes directly between earth and the sun and blocks the sun's light? How many astronauts manned each of the project gemini flights? Does the object on earth have the same mass as on the moon? How big is the asteroid 2004 MN4 that is supposed to hit Earth on Friday April 13 2029? Why does earth pull the moon instead of the other way around? What are three qualities of Zeus? Turning of the earth on its axis? What southern sky constellation has the same name as a group of highly intelligent people? What can a rocket carry? How many km is the sun from earth? What is constenation? Why are solar cell panels used in artificial satellites? What is the primary fuel of main sequence stars? Why does it take the space shuttle so long to get to the space station? Which of the outer planets has a surface more similar to the inner planets than to the outer planets? What planets have only 1 known moon?