Guide to Space
Ophiuchus
[/caption] The sprawling constellation of Ophiuchus sits on the celestial equator and was one of the 48 original constellations charted…
Octans
[/caption] The small constellation southern circumpolar constellation of Norma was originally charted by Abbe Nicolas Louis de Lacaille who named…
Norma
[/caption] The small constellation of Norma is located south of the ecliptic plane. It was originally charted by Abbe Nicolas…
Mercury Retrograde
[/caption] Ancient people have known about the planets since we were able to look up. Some stars were brighter than…
Life on Mercury
[/caption] Mercurian world is one of extremes. 700 Kelvin on the side exposed to the Sun, yet some areas are…
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…