Answer: A billion years
More information: Generally, an eon actually often refers to an indefinite amount of time
Answer: The black widow
More information: Millions of materials from space enter Earths atmosphere everyday, but most is burned up before it reaches Earth's surface. The heat caused by friction is what causes Meteorite's to glow in the sky.
More information: NATO stand for North Atlantic Treaty Organization.
More information: There are 24 time zones, maybe more. Some time zones are only 30-45 minutes apart.
Answer: Bering Sea
More information: John Conway's "look and say" sequence has no digits other than 1, 2, and 3 in it, unless the seed number contains such a digit or a run of more than three of the same digit. A degenerate sequence appears with the seed of 22.