Several organizations, such as the American Association of Variable Star Observers and Center for Backyard Astrophysics, exist to help coordinate these contributions.

* 3C 273: Variable Star Of The Season

Spider Robinson, a colleague, friend, and admirer of Heinlein, wrote Variable Star, based on an outline and notes for a juvenile novel that Heinlein prepared in 1955.

The story bears many similarities in plot and concepts to Variable Star written by Spider Robinson from an incomplete outline created by Heinlein around the time this book was written, and published in 2006.

The name is also used in Variable Star, a novel outlined by Heinlein but written by Spider Robinson, although this novel diverges from the Future History.

He is also used in Spider Robinson's Variable Star, a novel based on an outline of Heinlein's.

The American Association of Variable Star Observers collects such observations from participants around the world and shares the data with the scientific community.

* The American Association of Variable Star Observers

* Society for Popular Astronomy – Variable Star Section

* Variable Star Of The Month AAVSO.

* AAVSO Variable Star of the Month.

* American Association of Variable Star Observers

* AAVSO Variable Star of the Month.

* Amateur astronomer and president of the American Association of Variable Star Observers ( AAVSO ) Janet Akyüz Mattei of Bodrum.

* AAVSO Variable Star of the Season, January 2010: W Ursae Majoris

* AAVSO Variable Star of the Month.

In Variable Star, a science fiction novel written by Spider Robinson based on a story outline by Robert A. Heinlein, Robinson devotes several pages to his protagonist's discovery of Grey's Sacred Mirrors and Progress of the Soul series, and to using them to enhance meditation.

American Association of Variable Star Observers | AAVSO light curve of recurrent nova T Pyx from 1 Jan 1966 to 17 Nov 2010.

American Association of Variable Star Observers | AAVSO light curve of recurrent nova T Pyx from April 13 to May 6 2011.

* AAVSO Variable Star Of The Month April, 2002: T Pyxidis PDF / HTML ( 17 July 2010 )

* AAVSO Variable Star of the Month Profile of T Tauri

He also discovered and observed the variable stars R Leporis ( also known as Hind's Crimson Star ), U Geminorum, and T Tauri ( also called Hind's Variable Nebula ), and discovered the variability of μ Cephei.

Since its founding in 1911, the American Association of Variable Star Observers ( AAVSO ) has coordinated, collected, evaluated, analyzed, published, and archived variable star observations made largely by amateur astronomers and makes the records available to professional astronomers, researchers, and educators.

In the 1990s, the AAVSO developed the Hands-On Astrophysics curriculum, now known as Variable Star Astronomy ( with support from the National Science Foundation ( NSF )).

The Variable Man is a novella written and sold by Philip K. Dick before he had an agent.

The 1973 book Variable Piece 4: Secrets by the conceptual artist Douglas Huebler ( one of many works in his Variable Piece series ) was a compilation of nearly 1800 secrets written down by random people.

Variable assignment ( e. g. ) is handled in Logo with the command, as exemplified by these two equivalent statements:

* Variable value stamps-dispensed by machines that print the cost of the postage at the time the stamp is dispensed.

Set of hyperfrequency tubes ( 84 GHz and 118 GHz ) for plasma heating by electron cyclotron waves on the Tokamak à configuration variable | Tokamak à Configuration Variable ( TCV ).

Sternberg publishes the General Catalog of Variable Stars ( GCVS ), which is periodically ( approximately once every two years ) amended by the publication of a new " Name-List " of variable stars.

Variable content is displayed dynamically on the fly based on certain criteria, usually by retrieving content stored in a database.

Variable bit rate digital bit streams may be transferred efficiently over a fixed bandwidth channel by means of statistical multiplexing, for example packet mode communication.

* Variable Length Subnet Masks were not supported by RIP version 1.

Variable names, function names, and statement labels have the same form, a letter followed by zero to five letters or digits.

Variable length fields were addressed at their loworder position, their length defined by a word mark set at their highorder position.

Variable width box plots illustrate the size of each group whose data is being plotted by making the width of the box proportional to the size of the group.

Hubble's Variable Nebula is illuminated by R Monocerotis, a young variable star embedded in the nebula ; the star's unique interaction with the material in the nebula makes it both an emission nebula and a reflection nebula.

The ORDVAC or Ordnance Discrete Variable Automatic Computer, an early computer built by the University of Illinois for the Ballistics Research Laboratory at Aberdeen Proving Ground, was based on the IAS architecture developed by John von Neumann, which came to be known as the von Neumann architecture.

An alternative is that it was deliberately coined from the existing " VD " ( Variable Delay ) terminology by one of the designers.

Civilian models were powered by a fuel-injected 302 cu in ( 5. 0L ) in V8, while police vehicles used a 351 cu in ( 5. 8L ) V8 with Ford's Variable venturi carburetor.

The most well-known of these kits is the 1 / 100 Perfect Variable YF-19 by Studio HalfEye, which became the basis for Yamato Toys ' 1 / 72 diecast toy.