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A calendar is a system for naming periods of time, typically days. These names are known as calendar dates. Cycles in a calendar are often synchronised with the perceived motion of astronomical objects.
A calendar is also a physical device (often paper). This is the most common usage of the word.
As a subset, 'calendar' is also used to denote a list of particular set of planned events (for example, court calendar).
More on [ Calendar ]
Millionaire Follows Dad's Footsteps — Into Space
Thu, 09 Oct 2008 08:41:00 -0400
Richard Garriott, a famous video game developer, is paying millions of dollars for a ride on a Russian rocket to the International Space Station. He has wanted to go to space since he was a kid. His father and all of his neighbors were NASA astronauts. It's the first time the child of an American astronaut will blast off into space.
Young Galaxy's Magnetic Field Is Surprisingly Strong
Fri, 03 Oct 2008 13:53:00 -0400
Current models indicate that the magnetic fields that enclose galaxies grow slowly over billions of years. But scientists have used a telescope to peer back millions of years in time and discovered a distant galaxy with a magnetic field at least 10 times the average strength.
SpaceX Celebrates First Successful Rocket Launch
Fri, 03 Oct 2008 13:53:00 -0400
SpaceX's flagship Falcon1 rocket has successfully launched from an island in the central Pacific, becoming the first privately-developed rocket to orbit the planet. NASA has already contracted SpaceX to begin private space flight missions to the International Space Station beginning in 2010.
Computer Malfunction Delays Hubble Mission
Fri, 03 Oct 2008 13:31:00 -0400
NASA has postponed a planned repair mission to the Hubble Space Telescope after a new problem developed with the orbiting observatory. Ed Weiler, associate administrator of the Science Mission Directorate at NASA, explains why repairs won't take place until Feb. 2009 — at the earliest.
For Young Chinese, Spacewalk An Indicator Of Might
Sat, 27 Sep 2008 17:05:00 -0400
China on Saturday will become only the third nation — after Russia and the United States — to carry out a spacewalk. The event will be broadcast live nationwide. This milestone underscores China's technological achievements and is boosting national pride.
Solar Winds, Crucial To Life On Earth, Decreasing
Fri, 26 Sep 2008 12:45:00 -0400
Solar winds — invisible gas plasma emitted by the Sun — protect the solar system from cosmic rays that are hostile to terrestrial life. But new data from the Ulysses NASA probe indicate solar wind output is lower than has ever been previously documented.
AstroEvents - Listing of celestial events good for viewing including planetary, lunar, eclipses, and meteor showers.
Meta Description: [ The Complete Calendar of Astronomical Events. Monthly updated. Conjunctions, planetary configurations, phases of the moon, eclipses, meteor showers, and other celestial events. ]
Astronomical Sky Calendar - Program that when given a particular date generates information, the Julian date, sun rise and set times, moon rise and set times, and percent illumination.
Moonstick Information Site - A slide rule moon phase calendar determines the phases for any date, past (8000 years), present, or future.
Meta Description: [ provides a slide rule moon phase calendar and other methods of computing astronomical information ]
Night Sky Info - Weekly information about the night sky, astronomy articles and observations.
Meta Description: [ Weekly information about the night sky, including specific planetary locations and details on the most important asteroids, comets, and meteor showers. ]
Observing - The sky at a glance, highlights, sky chart, and gallery from Sky and Telescope Magazine.
Meta Description: [ Sky & Telescope, the Essential Magazine of Astronomy. News, observing tips, how-to advice, and more! ]
Que Tal - Month at-a-glance, what's up, planet watch, phases and encounters sun watch, and star maps and charts.
Meta Description: [ An Earth in Space online monthly newsletter. Includes viewing and location information for the planets, sun and our moon. Each issue also has a monthly star chart, star maps and graphics. (Revista mensual con información sobre observaciónes astronómicas) ]
Sky Calendars - Static versions for Mauna Kea for the years 1998 through 2004.
Sky Diary and Monthly Observing Notes - ISS, planets, sun, moon, and meteor showers by the month with links.
Meta Description: [ November 2007 Night Sky: Observing notes & Sky Diary - a round-up of what you can see in the night sky this month ]
Sky Events - Asteroid, comet, deep sky object, earth, meteor shower, moon, planet, and sun provided by Astronomy Magazine.
Meta Description: [ Astronomy.com, Astronomy Magazine, offers daily astronomy and space news, star charts, pictures of planets, space missions, eclipse and much more. ]
SkyEye - A calendar of celestial events by the appropriate month.
Meta Description: [ Welcome to SkyEye, your guide to this
month's celestial events. ]
SkyWatch - Sends subscribers a daily email on astronomical events such as satellite passes and meteor showers.
Meta Description: [ SkyWatch Sky News And Sky Calendar With Satellite Tracking and Meteor Showers for Amateur Astronomy ]
Starmanjer's Sidewalk Stargazing - Simple guide to the night sky. Updated monthly sections on the Moon, Planets and Stars.
The Natural Year - Circular Almanac - Daily weather averages and astronomical information.
Meta Description: [ Patterns, cycles, and relationships of events
in the natural world become clear in this chart. Weather data, sunrise and set,
moonrise, set and phase, tides, stars, and planet motions are vividly displayed. ]
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