Constellation - Wikipedia, the Free Encyclopedia
In modern astronomy, a constellation is a specific area of the celestial sphere as defined by the International Astronomical Union (IAU).
Lunar Phase - Wikipedia, the Free Encyclopedia
The lunar phase or phase of the moon is the shape of the illuminated (sunlit) portion of the Moon as seen by an observer on Earth. The lunar phases change cyclically as the Moon orbits the Earth, according to the changing positions of the Moon and Sun relative to the Earth.
Lunar Eclipse - Wikipedia, the Free Encyclopedia
A lunar eclipse occurs when the Moon passes directly behind the Earth into its umbra (shadow). This can occur only when the sun, Earth and moon are aligned exactly, or very closely so, with the Earth in the middle.
Lunar Eclipses: What Is a Total Lunar Eclipse & When Is the Next One?
Lunar eclipses occur when Earth's shadow blocks the sun. There are three types; the most dramatic is a total lunar eclipse. Find out when is the next one.
Today's Moon Phase
Get Today's Moon Phase with current viewing information. Also click on the calendar to see the moon's phase and information for other days.
Telescopes - Telescopes.com
Telescopes.com carries a variety of Telescopes and Accessories, Astronomy Binoculars and Spotting Scope and more.
Best Telescopes for Beginners - Reviews and Buying Guide
Learn about the four types of telescopes for beginners and find the best telescope in each category by reading our in-depth reviews.
The Constellations - IAU
Full list of constellations with diagrams.
Constellations: A Guide to the Night Sky
Stargazing and Skywatching - StarDate
Stargazing and Skywatching. For more information about what to see in the nightsky tonight and this month, visit our Stargazing page.
Tonight - EarthSky
Daily updates of the events happening in Earth's Sky.
Night Sky - Stargazing and Night Sky Watching
Learn about skywatching, astronomy, star gazing, and comets in the night sky at SPACE.com. View astrophotography and images of celestial bodies.