Guide to Space
Visible Light
[/caption] Of all the wavelengths in the electromagnetic spectrum, those that lie between 400 nm to 700 nm are the…
Plane of the Ecliptic
[/caption] Plane of the ecliptic, also known as the ecliptic plane, is a phrase you will often hear in astronomy.…
Minor Planets
[/caption] Minor planet is a term used to refer to a celestial object - that is not a planet or…
Habitable Planet
[/caption] The term "habitable planet" seems rather broad. Does it mean that it is habitable for humans? Is it merely…
Have Humans Visited Mercury?
[/caption] Have astronauts from Earth ever stepped foot on Mercury? No, Mercury has been visited by spacecraft from Earth, but…
Geology of Mercury
[/caption] The geology of Mercury is similar to the geology of the Moon; although, Mercury is a much denser planet…
Discovery of the Planets
[/caption] We actually only know the exact date of when a few of the planets were discovered. Five of the…
Names of the Planets
[/caption] You may recognize the names of the planets from your high school literature course or a history class. That…
Planetary Alignment
[/caption] Thousands of years ago, men looked to the planets to guide them. Planetary alignments foretold momentous events of good…
What is Interplanetary Space?
[/caption] The region of space within our Solar System is called interplanetary space, also known as interplanetary medium. Most people are…