Analysis of information sources in references of the Wikipedia article "Asteroide" in Portuguese language version.
Meteoroid: A solid object moving in space, with a size less than 10 m, but larger than 100 μm.
The group of scientists and former astronauts is devoted to defending the planet from a space apocalypse.
Two years ago, NASA dismissed and mocked an amateur's criticisms of its asteroids database. Now Nathan Myhrvold is back, and his papers have passed peer review.