OUR SOLAR SYSTEM'S PLANETS: NEPTUNE
Another astronomy video from Alex McColgan, owner of the YouTube channel Astrum. The star of this video is not a star, but a planet called Neptune, the eighth planet from the sun. Its diameter is nearly identical to that of Uranus, at 30,600 miles (49,245 km), but at 2.8 billion miles (4.5 billion km) from the sun, it is nearly twice as far as Uranus. The average temperature at the cloud tops of Neptune is -392 degrees Fahrenheit (-200 degrees Celsius). The winds on Neptune are the highest measured in the Solar System at 1,300 mph (2200 km/h).