Neptune

The average distance between the Sun and Neptune is 4.55 billion km, and Neptune completes its orbit every 164.79 years; a year on Neptune is 164.79 Earth years. Despite this fact, it never appears in the same position in our sky because the Earth would have rotated in a different location during its 365.25 day […]

Now that Pluto has been demoted from a planet to a dwarf planet, Neptune is now the most distant planet in the solar system. It is 2.8 million miles from the Sun or 30 times the distance of the Earth to the Sun. Its distance has also made it, until recently, one of the most

Of the four giant planets, Neptune is the smallest. Its diameter is roughly 30, 755 miles. This is the measurement taken from a point in the atmosphere where the pressure does not exceed 1 bar. Neptune is four times bigger than earth but is just slightly smaller than Uranus. Despite being smaller than Uranus, Neptune’s

Neptune, just like the other gas giant planets in our Solar System, can actually be broken up into different layers. In fact, its composition can change depending on which layers you’re looking at. Shall we go and learn more?

Texts and descriptions are fine and dandy, but to see planet Neptune for what it is is another thing altogether.  Enjoy these pictures of Neptune.

Mass (kg): 1.02 x 1026 Diameter (km): 49528 Mean density (kg/m3) : 1640 Escape velocity (m/s): 23300 Average distance from 640-864 Sun: 30.07 AU (4,498,252,900 km) Rotation period (length of day in Earth days) : 0.67 (19.1 hours) Revolution period (length of year in Earth days): 60,190 (164.8 Earth years) Obliquity (tilt of axis degrees)

1. Neptune is the fourth largest planet in the Solar System. 2. Neptune is a gaseous planet, composed of hydrogen, helium, methane, with traces of ammonia and water. 3. Neptune was discovered by Urbain Le Verrier, John Couch Adams, and Johann Galle on September 23, 1846. 4. The only spacecraft ever to visit Neptune was