
Space & PhysicsJanuary 1, 2007
What Is a Planet?
The controversial new official definition of "planet," which banished Pluto, has its flaws but by and large captures essential scientific principles

What Is a Planet?
The controversial new official definition of "planet," which banished Pluto, has its flaws but by and large captures essential scientific principles

What Is a Planet?: Overview/Planet Definition

The Deep-Earth-Gas Hypothesis
There is much evidence indicating that earthquakes release gases from deep in the earth's mantle. Such gases may include methane of nonbiological origin, which could be a vast resource of fuel