What is a peteameter?

Why is the moon out all night? How does the gravitational force of an asteroid flying close to Earth affect our planet? When did hypatia invent the hydrometer and pane astrolabe? How centripetal force equals to gravitational force? What is a bright star -5 or 5? Where in the solar system are most of the dwarf planets located? Why did the asteroid is between planet mars and Jupiter? Do your think will mean the end of life on earth? How does rockets land on the moon? Why rockets are launched into space using jet propulsion where exhaust accelerates out from the rocket and the rocket accelerates in an opposite direction? What is the space above the mercury in the tube of a mercury barometer? What would be a perfect setting for a tornado to occur? How did ursa minnor get its name? Is there a full moon when the sun is behind and a little above earth? What universe do we live in? How hot is a orange star? What else is star Arcturus called? Does the name Terran mean thunder in Celtic? Why are concave mirrors useful for satellites? Is it possible to see ghosts during the day?