December Apogee Moon and A Special BirthDate

25dec-apogee_moonOur Moon reaches apogee, (greatest distance from Earth), on Sunday December 25th. At that time the Moon will more or less be at a distance of 31.80 Earth diameters (405,870 km or 252,196 miles) from the Earth.
   A Special Birth Date:
   Centuries ago on December 25th a birth occurred that would later lead to a knew understanding of the universe and our place within the universe. Were he alive today Isaac Newton would be 374 years old. Happy B-Day Isaac!
   But wait! Was Isaac Newton born on December 25th 1642, or January 4th 1643? At that time there were two calendars in use and the part of England where he was born had not yet switched to the new Gregorian Calendar which would have his birthdate in January rather than December as shown on the Julian Calendar. Here is an interesting explanation about this.

   Does our Moon actually go around the Earth as the above graphic shows? From our perspective on the Earth the Moon appears to circle around the Earth. However, in reality, the Moon orbits the Sun together with the Earth.

   Click here to read my 2006 Scope on the Sky column “The Real Shape of the Moon’s Orbit”. (PDF)

   Read this very informative article about the Earth-Moon system and their orbital motions, written by Joe Hanson. “Do We Orbit the Moon?”

   
   The nearly new Moon, a 26-day old thin waning crescent Moon, rises about 2 hours before the Sun.

   
   
   
   

Click here to go to the Qué tal in the Current Skies web site for monthly observing information, or here to go to bobs-spaces.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s