WorldCat Identities

Walz-Chojnacki, Greg 1954-

Overview
Works: 20 works in 43 publications in 1 language and 6,412 library holdings
Genres: Juvenile works  Handbooks and manuals  Conference papers and proceedings  Popular works  Science fiction 
Roles: Author, Performer
Classifications: QB581, 523.3
Publication Timeline
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Most widely held works by Greg Walz-Chojnacki
Celestial delights : the best astronomical events through 2001 by Francis Reddy( Book )

6 editions published between 1992 and 2012 in English and held by 520 WorldCat member libraries worldwide

Celestial Delights is the essential 'TV Guide' for the sky. Through extensive graphics integrated with an eight-year-long calendar of sky events, it provides a look at "don't miss" sky events, mostly for naked-eye and binocular observing. It is organized by ease of observation - lunar phases and the brighter planets come first, with solar eclipses, the aurora, and comets coming later. This third edition also includes a hefty dose of sky lore, astronomical history, and clear overviews of current science. It provides a handy reference to upcoming naked-eye events, with information broken out in clear and simple diagrams and tables that are cross-referenced against a detailed almanac for each year covered. This book puts a variety of information all in one place, presents it in a friendly way that does not require prior in-depth astronomical knowledge, and provides the context and historical background for understanding events that astronomy software or web sites lack
Comet! : the story behind Halley's comet by Greg Walz-Chojnacki( Book )

1 edition published in 1985 in English and held by 491 WorldCat member libraries worldwide

Explains the nature of comets, what is known about Halley's comet, and various countries' plans to study it in 1985 and 1986. Makes suggestions for maximum viewing enjoyment
The moon by Isaac Asimov( Book )

2 editions published in 1994 in English and held by 425 WorldCat member libraries worldwide

This book discusses the different theories on the origins of the Moon and the space missions sent to study it
Our planetary system by Isaac Asimov( Book )

2 editions published in 1994 in English and held by 404 WorldCat member libraries worldwide

This book discusses the members of the Sun's family, and how each differs from the other
Death from space : what killed the dinosaurs? by Isaac Asimov( Book )

2 editions published between 1994 and 1995 in English and held by 392 WorldCat member libraries worldwide

This book discusses the possible causes and effects that led to the death of dinosaurs millions of years ago
UFOs : true mysteries or hoaxes? by Isaac Asimov( Book )

3 editions published in 1995 in English and held by 381 WorldCat member libraries worldwide

This book introduces information on unidentified flying objects
The birth of our universe by Isaac Asimov( Book )

2 editions published in 1995 in English and held by 356 WorldCat member libraries worldwide

This book introduces information to help the reader understand the vastness of the universe
Cosmic debris : the asteroids by Isaac Asimov( Book )

1 edition published in 1994 in English and held by 347 WorldCat member libraries worldwide

Provides facts and information about asteroids
Our vast home : the Milky Way and other galaxies by Isaac Asimov( Book )

1 edition published in 1995 in English and held by 334 WorldCat member libraries worldwide

Provides an insider's view of our own Milky Way and discusses the nature and behavior of galaxies in general
Astronomy projects by Isaac Asimov( Book )

1 edition published in 1996 in English and held by 321 WorldCat member libraries worldwide

Presents a variety of astronomy projects, including creative writing and drawing assignments, modelmaking, sky observation, and experiments
Planet of extremes--Jupiter by Isaac Asimov( Book )

2 editions published in 1995 in English and held by 313 WorldCat member libraries worldwide

This book introduces Jupiter, the largest planet in our Solar System
Aliens and extraterrestrials : are we alone? by Isaac Asimov( Book )

1 edition published in 1995 in English and held by 310 WorldCat member libraries worldwide

This book discusses "extraterrestrials."
Pollution in space by Isaac Asimov( Book )

2 editions published in 1995 in English and held by 296 WorldCat member libraries worldwide

This book introduces information on pollution in space
Space colonies by Isaac Asimov( Book )

3 editions published in 1995 in English and held by 274 WorldCat member libraries worldwide

This book discusses the role that must be taken in dealing with other worlds
Discovering comets and meteors by Isaac Asimov( Book )

2 editions published between 1995 and 1996 in English and held by 265 WorldCat member libraries worldwide

Discusses the characteristics of comets and meteors and cites both famous appearances and unexplained mysteries connected with them
A double planet? : Pluto and Charon by Isaac Asimov( Book )

5 editions published between 1995 and 1996 in English and held by 261 WorldCat member libraries worldwide

Discusses the smallest, most distant, and most mysterious planet in our solar system, its discovery, its peculiar orbit, and its recently discovered satellite
Modern astronomy by Isaac Asimov( Book )

1 edition published in 1996 in English and held by 251 WorldCat member libraries worldwide

Offers an account of how scientists and amateurs use instruments such as space telescopes, computers, radio telescopes, and binoculars to study the universe
Science fiction : visions of tomorrow? by Isaac Asimov( Book )

1 edition published in 1995 in English and held by 241 WorldCat member libraries worldwide

This book compares science fiction with science fact
The 21st century in space by Isaac Asimov( Book )

2 editions published in 1996 in English and held by 229 WorldCat member libraries worldwide

Projects astronomical and astronautical possibilities for the future, such as huge telescopes, airplanes in space, a probe to the sun, and a landing on Mars
Line out by Over/Under (Musical group)( Recording )

1 edition published in 2007 in English and held by 1 WorldCat member library worldwide

 
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Audience Level
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Audience Level
1
  Kids General Special  
Audience level: 0.15 (from 0.09 for Planet of ... to 0.86 for Line out / ...)

Death from space : what killed the dinosaurs?
Alternative Names
Chojnacki, Greg, Walz-

Chojnacki, Greg Walz- 1954-

Languages
English (41)

Covers
Death from space : what killed the dinosaurs?UFOs : true mysteries or hoaxes?The birth of our universeAliens and extraterrestrials : are we alone?Discovering comets and meteorsA double planet? : Pluto and CharonThe 21st century in space