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... . So, it is thus no surprise that the earliest calendars were lunar. Very early, in 5000 BCE, the Egyptians developed a calendar with a year that was regulated by the moon and ... established civilizations along the banks of major rivers. Sometime between 3200 and 2800 BCE the calendar was developed in Mesopotamia, and then copied by the Greeks. Their year was divided into ... various schemes were invented to compensate for this discrepancy. Around 2000 BCE the Babylonian's calendar added an extra month every four years, while others attempted to correct the discrepancy by ...

... JPL. More Cassini information is available at: http://www.nasa.gov/cassini -end- ''MEDIA ADVISORY: M10-070'' ''NASA ANNOUNCES SHUTTLE PRELAUNCH EVENTS AND COUNTDOWN DETAILS'' CAPE CANAVERAL, Fla. -- NASA has set ... streaming video, scheduling and downlink information, visit: http://www.nasa.gov/ntv -end- ''MEDIA ADVISORY: M10-146'' ''NASA INVITES REPORTERS TO NEXT SPACE SHUTTLE LAUNCH AND TWEETUP'' WASHINGTON -- At the next ...

... returned to the teams so they can prepare reports about their findings. -end- ''MEDIA ADVISORY: M10-076'' ''NASA SPACE SHUTTLE CREW IN WASHINGTON, AVAILABLE FOR INTERVIEWS'' WASHINGTON -- NASA Headquarters in Washington ... .S. elementary school students and other guests. Journalists are invited to attend. -end- ''MEDIA ADVISORY: M10-142'' ''NEW ASSOCIATE ADMINISTRATOR FOR EDUCATION AVAILABLE FOR MEDIA'' WASHINGTON -- Leland D. Melvin, NASA's ...

... , includes classroom activities about animal habitats, "green tips, recycling, and other topics. -end- ''MEDIA ADVISORY: M10-061'' ''NASA'S SPACE SHUTTLE CREW IN WASHINGTON, AVAILABLE FOR INTERVIEWS'' WASHINGTON -- NASA Headquarters in ... information and links to streaming video, visit: http://www.nasa.gov/ntv -end- ''MEDIA ADVISORY: M10-019'' ''NASA ANNOUNCES NEWS TELECON TO DISCUSS HUBBLE IMAGES OF PLUTO'' WASHINGTON -- NASA will hold ...

... their inventions in Baltimore March11-13 and Richmond, Va., March 18-20. -end- ''MEDIA ADVISORY: M10-049'' ''NASA PLANS EARTH DAY TWEETUP ON THE NATIONAL MALL IN WASHINGTON'' WASHINGTON -- NASA will ... of online registrants. Additional registrants will be added to a waiting list. -end- ''MEDIA ADVISORY: M10-036'' ''NEW NASA WEB PAGE SHEDS LIGHT ON SCIENCE OF A WARMING WORLD'' WASHINGTON -- Will ...

... MEDIA ADVISORY: M10-051'' ''NASA WORK ASSIGNMENTS TOPIC OF MEDIA TELECON ON THURSDAY, APRIL 8'' WASHINGTON -- NASA Administrator ... will be streamed on the Web at: http://www.nasa.gov/newsaudio -end- ''MEDIA ADVISORY: M10-018'' ''NASA ANNOUNCES TWO NEWS CONFERENCES TO DISCUSS THE 2011 BUDGET AND A BOLD NEW ... 12:30 p.m., Feb. 1, at: http://www.nasa.gov/budget -end- ''MEDIA ADVISORY: M10-050'' ''NASA SETS MEDIA CREDENTIAL DEADLINES FOR NEXT SPACE SHUTTLE FLIGHT'' WASHINGTON -- NASA has set ...

... STS-133 crew and mission information, visit: http://www.nasa.gov/shuttle -end- ''MEDIA ADVISORY: M10-165'' ''NASA RESCHEDULES SHUTTLE LAUNCH STATUS MEETING, DISCOVERY'S LAUNCH NO EARLIER THAN DEC. 3 ... STS-133 crew and mission information, visit: http://www.nasa.gov/shuttle -end- ''MEDIA ADVISORY: M10-052'' ''NASA INVITES MEDIA TO PREVIEW TEST OF NEW LAUNCH ABORT SYSTEM'' HOUSTON -- NASA has ...

... two impacts, visit: http://www.nasa.gov/topics/solarsystem/features/jupiter20100909.html -end- ''MEDIA ADVISORY: M10-002'' ''NASA'S SPACE SHUTTLE CREW IN WASHINGTON, AVAILABLE FOR INTERVIEWS'' WASHINGTON -- NASA Headquarters in ... .m. at the Howard University School of Science and Mathematics on campus. -end- ''MEDIA ADVISORY: M10-055'' ''NASA ANNOUNCES CONFERENCE ON THE AMERICAN SPACE PROGRAM FOR THE 21ST CENTURY'' WASHINGTON -- NASA ...

... , Atlanta, San Francisco, Berlin, Toronto, Mexico City and several other international locations. -end- ''MEDIA ADVISORY: M10-025'' ''NASA TO DISCUSS SUPERNOVA AND DARK ENERGY RESEARCH AT FEB. 17 TELECONFERENCE'' WASHINGTON -- NASA ... live on NASA's Web site at: http://www.nasa.gov/newsaudio -end- ''MEDIA ADVISORY: M10-029'' ''PRESIDENT OBAMA SCHEDULED TO SPEAK TO ORBITING ASTRONAUTS'' WASHINGTON -- President Obama, congressional leaders and ...

... delivery, food poisoning vaccine development, air purification, remote ultrasound tests and more. -end- ''MEDIA ADVISORY: M10-103'' ''NASA SETS BRIEFING TO PREVIEW SPACE STATION SPACEWALK'' HOUSTON -- NASA managers will discuss an ... streaming video, schedules and downlink information, visit: http://www.nasa.gov/ntv -end- ''MEDIA ADVISORY: M10-093'' ''CALIFORNIA STUDENTS AWAIT CALL FROM SPACE STATION CREW'' WASHINGTON -- About 300 elementary students will ...

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