Facts about Neptune
Neptune is 31,000 miles across(49,890km)across. Neptune is 2.8 million miles (4.5million km) from the sun. Neptune orbits the sun once every 165 earth years. It will not finish until 2014. It is the fourth largest planet. Neptune completes 1 turn every 16 hours and 7 minutes. Neptune is really bigger than earth. If Neptune were hollow 42 Earths could fit inside. Neptune gets less heat and less light from the sun than earth does. Neptune's temperature can go to as low 373 degrees Fahrenheit which is 225 degrees Celsius. Like Jupiter and Saturn Neptune has an internal heat source it radiates more than twice as much energy as it receives from the Sun.
