Neptune

The eighth planet from the Sun in the solar system. Neptune orbits the Sun at an average distance of 30 AU. The planet has a mass 17.1 times the mass of Earth and a radius 3.9 times the radius of Earth. Neptune is a gas planet made of hydrogen, helium, and methane and has no solid surface. It has a small ring system and 13 known moons, the largest of which is Triton.

Resources

Neptune's Triton Triton is a world like no other. Geysers of gas...
Realm of the Giants The region beyond the asteroid belt is the realm...
Neptune Neptune might be called the mathematicians'...

Radio Programs

Missed Opportunity Missing a “stellar” opportunity Monday, January 28, 2013
Johann Galle Taking note of a new planet Saturday, June 9, 2012
Triton A frigid moon like no other Tuesday, August 23, 2011
Neptune at Opposition Pulverizing a Neptunian moon Monday, August 22, 2011
Urbain Leverrier A "calculated" planetary discovery Friday, March 11, 2011
Neptune’s First Orbit A planet returns to its beginnings Sunday, November 7, 2010
Proteus
Moon and Planets
Jupiter and Neptune

Featured Images

Voyager 2 view of the Adams Ring at Neptune
 Pulverized Moon Monday, August 22, 2011
Kidnapped? Friday, August 4, 2006

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