What is the Weather Like on Neptune?
Neptune is the most distant planet from the Sun, with temperatures that plunge down to 55 Kelvin, or -218 degrees…
Neptune Compared to Earth
[/caption] To really understand how big Neptune really is, you need some kind of comparison. Let's see how Neptune compares…
Neptune’s Orbit
[/caption] Neptune orbits the Sun at an average distance of 4.5 billion km. That's the simple answer to the question,…
Radius of Neptune
[/caption] The equatorial radius of Neptune is 24,764 km. That's the quick answer. But you need to understand that things…
Size of Neptune
[/caption] Neptune is so dim and distant that you can only see it with a moderately powerful telescope. But Neptune…
“Leap Second” to be Added to World Clocks
If you ever feel like you need more time, here's some great news: you're actually going to get it. On…
Hubble’s Early Festivities: Imaging the M13 Globular Cluster “Snow Globe”
[/caption] This image is one of the latest views from the Hubble Space Telescope, closely resembling a toy snow globe.…
Powerful Rivers of Gas Imaged Around Star-Forming Swan Nebula
[/caption] The turbulent and dynamic Swan Nebula (M17) has been imaged by NASA's Spitzer Space Telescope, producing the clearest view…
The Diameter of the Milky Way
[/caption] The diameter of the luminous Milky Way is between 100,000 and 120,000 light years across, but that number could…
Musca
[/caption] The constellation of Musca was originally created by Petrus Plancius from the stellar observations of Dutch sea navigators Pieter…