... Tonight's Sky . ... The Magazine . ... Star Atlas . ... An artificial comet holds secrets to Earths life . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... The planet has extreme temperature swings and perhaps active lava flows. ... A digital supplement to Astronomy magazine. ... Join TravelQuest International with Astronomy and Discover magazines on one of three great tour options surrounding this celestial spectacle . ... Astronomy Magazine . ...

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• Bright planets meet at dusk | Astronomy.com
• Do the magnetic fields of the planets affect spacecraft during flybys? |
• Hubble will use rare stellar alignment to hunt for planets | Astronomy.com

... Positions in 2000 - Jan - Feb - Mar - Apr - May - Jun - Jul - Aug - Sep - Oct - Nov - Dec . Positions in 2001 - Jan - Feb - Mar - Apr - May - Jun - Jul - Aug - Sep - Oct - Nov - Dec . Positions in 2002 - Jan - Feb - Mar - Apr - May - Jun - Jul - Aug - Sep - Oct - Nov - Dec . Positions in 2003 - Jan - Feb - Mar - Apr - May - Jun - Jul - Aug - Sep - Oct - Nov - Dec . Positions in 2004 - Jan - Feb - Mar - Apr - May - Jun - Jul - Aug - Sep - Oct - Nov - Dec . ...

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• May 2002 Planetary Alignment
• The Human Orrery
• Irregular Satellite Research

Many entry fields permit sexagesimal entry (h:m:s.s or :':"). ... Sexagesimal entry is flexible in that you can specify one to three fields, as you desire. ... Position entry widgets assume that a single field is decimal hours or degrees (h.h or . ... You may specify one to three fields: . ... Note: sexagesimal offsets and durations are entered in the same fashion, but a single field is decimal arc-seconds or seconds ('.' or s.s) and two fields are (arc) minutes and seconds (':"." or m:s.s). ...

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• TUI:Tidbits:Entering Sexagesimal Offsets and Durations
• TUI:Introduction

... Chapter 4: Solar System Targets > 4.2 Target Identification . ... The following information is required to identify and classify each target. ... For example, separate targets should be defined if you plan to take spectra of several different surface features on a planet, or if you plan to observe the same feature with different timing constraints. ... Description . PLANET . If the target is the center of a planet, enter PLANET followed by its name (e.g., PLANET JUPITER , PLANET SATURN ). ...

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• CCD Position and Orientation on Sky
• Institute for Planets and Life
• Target Description [Description]

Astronomy Terms - To Help You Study The Universe . Articles | ... Learning about the universe, or the study of astronomy, can be fun for the individual or for the whole family. ... Learning a few simple terms will help you with this fascinating study. ... You will use a telescope or binoculars for your observation of the sky at night. ... Celestial Terms . ... Meteor or a shooting star – the light caused when a meteoroid burns up in Earth's . ... www.astronomy.net . About Astronomy Net | ...

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• U.S. Naval Observatory, AstroGuide Listing

... Starting in the 1400s astronomers erected large instruments here to enable them to measure star and planet positions with increasing accuracy. ... A new star, likely the brightest supernova in recorded human history, appeared in planet Earth's sky in the year 1006 AD. ... Alpha Centauri: The Closest Star System . ... The closest star system to the Sun is the Alpha Centauri system. Of the three stars in the system, the dimmest -- called Proxima Centauri -- is actually the nearest star. ...

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... The sky position of a single source may be entered via the parameters ra , dec and (optionally) errorradius . ... In this mode, the output positions are printed to a single line of standard output. The format of this output line is given in the following examples. Example 1: command line . ... Source RA = 56.917500 deg. Source dec = 24.365171 deg. # # rawX rawY ccd 32 188 8 . Example 2: if you want to display the numbers only, add withheader =`no' to the command line. ...

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• Example 3: Point source with explicit position

... The planets differ greatly in size and properties, and their fields differ too. ... In 1959, after the Earth's radiation belt had been discovered, Frank Drake observed Jupiter and concluded from the relative intensities in a range of wavelengths that the signal was probably emitted by electrons trapped in a strong magnetic field. Then in 1973 the space probe Pioneer 10 passed by Jupiter and found there, sure enough, an enormous planetary magnetic field and a very intense radiation belt. ...

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• The magnetosphere models
• Millennium of Geomagnetism: Magnetism of other planets
• Inventory

... 2015 October 9 . The Moon Entering Earth's Shadow . ... Explanation: On September 27/28, from all over the planet's nightside moon watchers enjoyed a total lunar eclipse. The dramatic celestial spectacle was widely imaged , but this lunar eclipse picture may look a little strange and unfamiliar, made with a point and shoot camera of a bygone era. ... Entering Earth's shadow, the Moon grew dimmer and its moontrail narrower as the eclipse progressed . ... About APOD | ...

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• Astronomical Names
• APOD: 2003 March 30 - Beijing Ancient Observatory
• APOD: April 12, 1996 - Man Enters Space

... The package AMPLE (Adaptable Minor Planet Ephemerides) is dedicated to solving a number of problems concerning minor planets with the aid of IBM-type personal computer. ... Obtaining selection of orbital elements and/ or photometric parameters of minor planets in conformity with imposed restrictions. ... The orbital elements of all minor planets used in AMPLE for 2015 have been determined in IAA on the ground of available observations in the catalogue of observations of the Minor Planet Center. ...

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• AY2007 (preface)
• AY2008 (preface)
• AY2011 (preface)

Program: GETVAL Purpose: Get image values at given positions in a set Category: UTILITY File: getval.c Author: M.G.R. Vogelaar Keywords: INSET= Give set (,subset): Maximum number of subsets is 1. ... The image values are formatted according the string entered in FORMAT= APPEND= Ok to append? ... The flag characters and their meanings are: - The result of the conversion is left- justified within the field. ... If the result of a conversion is longer than the field width, an asterisk is returned. ...

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• http://www.atnf.csiro.au/computing/software/gipsy/tsk/pplot.dc1
• http://www.atnf.csiro.au/computing/software/gipsy/tsk/transform.dc1
• http://www.atnf.csiro.au/computing/software/gipsy/tsk/editset.dc1

... The study of extra solar planets will be one of the most important areas of research in astronomy in this century. ... The first planets outside the solar system were found in 1992 around the millisecond pulsar PSR B1257+12 by Alex Wolszczan at the Arecibo Observatory . ... Three space missions based on this principle (MOST, COROT and Kepler ) have already been launched or approved, and have the last one at least has the potential to find Earth-sized planets. ... SIM ( NASA ) is one of such missions...

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• on,off position switching offsets
• ivulot softek
• Example Observing Projects

... Bad Astronomy . Misconceptions . ... The Nine Planets . ... This is true, and so I have updated this page with a tidal force calculation. ... That way we can see right away how strong the other planets are; a gravity of 10 means the planet pulls on the Earth 10 times as much as the Moon does. ... So, in units of Moon gravity and tides, below are the forces on the Earth from rest of the planets (the data for masses and distances are from the wonderful page The Nine Planets ). ... 2008 Phil Plait. ...

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• Phil Plait's Bad Astronomy: Bitesize Tour of the Solar System
• Phil Plait's Bad Astronomy: Mad Science
• Phil Plait's Bad Astronomy: Bitesize Astronomy

... Next, the screen displays "Press 0 to align or Mode for Menu." Press "0" if you wish to begin Automatic alignment (or Easy Align, depending on your telescope model), or press Mode if you wish to choose a manual alignment method ("Automatic Alignment" displays, and you can press MODE to go through the menu to find other alignments). ... Note: If you press the "?" key while "Ctr Brightest Star" displays, the alignment star that AutoStar has chosen will display. ... Alignment successful" displays. ...

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• Meade Instruments Corporation - Frequently Asked Questions
• Meade Instruments Corporation - Instructional Videos - ETX-60 & ETX-80 Backpack
• Meade Instruments Corporation - ETX-90EC and Autostar Frequently Asked...

... Satellites of the planets are assigned a provisional designation (indicating year of discovery) by the Central Bureau for Astronomical Telegrams ( CBAT ) upon satisfactory demonstration of the existence of a new object. ... In the past, Comets were first given a provisional designation, consisting of the year and a lowercase letter indicating the order of discovery in the year (e.g., 1994a was the first comet discovered or recovered in 1994, 1994b the second, etc.) ... Names .. ...

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• Introduction to The Nine Planets
• Lagrangian Points
• Millennium of Geomagnetism: Magnetism of other planets

Computer Ephemeris. Ephemeris for physical observations of the planets. Explanations. Each row of the table contains for date specified at 0h of Time Terrestrial Dynamical: . ... position angle of axis of planetary rotation (degrees) - 'P', . ... illumanated part of the disk - k, . ... position angle of disk point with minimal illumination (degrees), . longitude of central meridian of the disk (degrees) - 'merid1' - system I and so... phase correction (degrees). ...

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... This appartus will drop a mass from different heights. When the mass strikes the ground, some percentage of its original energy will be absorbed by the ground. ... The percentage of the energy which is absorbed by the surface on each "bounce" (EAS) . ... The impact velocity of the object will also be given at each bounce. ... Start= Drop the ball after Energy, Mass and EAS have been set; resume after step or pause has been selected . ... Reset = Reset experiment to intial values . ...

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• Astronomy Plus CCD Images of Galaxies
• Orbital Properties of the Solar System
• Astronomy HyperText Book: Planetary Motion

... The begining of program -- Target function: a * b with TEXT_IO ; use TEXT_IO ; procedure EXAMPLE is package IO_INT is new INTEGER_IO ( INTEGER ) ; use IO_INT ; r,b,a: INTEGER ; begin put ( Enter unsigned number 'b', please ... unsigned number 'a', please: ) ; get ( a ) ; declare VAR0 , VAR1 : INTEGER ; begin VAR0 := a; VAR1 := b; declare VAR3 , VAR2 , VAR4 : INTEGER ; begin VAR3 := 0 ; VAR2 := VAR0 ; VAR4 := VAR1 ; while VAR2 /= 0 loop begin if ...

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To change your password: passwd Old password: enter your current password New password: enter your new password Retype new password: re-enter your new password . Enter the command passwd and then respond to the prompts by entering your old password followed by your new one. ... The passwords will not appear on the screen as you type, to prevent other people from seeing them. If you make a mistake, the message Mismatch - password unchanged. is displayed and your password remains unchanged. ...

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• Entering commands
• Example of using the break and continue statements
• Entering more than one command

Stellarium 0.12.3 . ... Classes . ... FileљStructure . ClassљList . ClassљIndex . ClassљHierarchy . ClassљMembers . Planet . Vertex2D . ... Planet::Vertex2D Struct Reference . A simple 2D vertex with only a position. More... #include < Planet.hpp > . Vertex2D (const float x, const float y) . ... position . ... Definition at line 297 of file Planet.hpp . The documentation for this struct was generated from the following file: . core/modules/ Planet.hpp . ...

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• Stellarium: SpaceShipObserver Class Reference
• Stellarium: TelescopeClientDummy Class Reference
• Stellarium: Member List