| Stars_and_Planets Information about interesting stars and planets in our galaxy, as well as astral bodies outside the Milky Way. Includes photos. |
| Planetary_Phenomena Historical account of conjunctions, occultations, and transits 3000 BC to 3000 AD. |
| Air_Movement_and_Control_Association Provides publications, membership, certified ratings program and seminars for manufacturers of air system equipment including fans, louvers, dampers, air curtains, airflow measurement stations, and ac |
| Chartered_Institution_of_Building_Services_Engineers_(CIBSE) UK-based institution for building services including heating, ventilation and air conditioning. |
| Cooling_Technology_Institute Nonprofit self-governing technical association dedicated to improvement in technology, design, performance and maintenance of cooling towers. Membership, publications, certification, and meetings. |
| Eastern_Michigan_ASHRAE Newsletter, calendar of events and the contact to the society's officers. |
| South_African_Institute_of_Refrigeration_&_Air_Conditioning Site gives details about the organisation including training courses, journals and data manuals. |
| The_Wichita_Chapter_of_ASHRAE This site describes the activities of the Wichita, Kansas chapter of the ASHRAE. |
| University_of_Illinois_at_Urbana-Champaign Student chapter overview, news, event and activity information, design projects, member resumes, officer list, mailing list, and membership information. |
| The_Aesthetics_of_Symmetry A brief digression into how people perceive symmetrical patterns -- what makes them boring, interesting, or overly intricate |
| Back_to_Square_One Includes description, solutions and other resources on this cube-like puzzle. |
| Critical_Math Articles and images on recreational math from fractals and magic squares to mathemorchids and Galois. |
| Cryptarithms_Online 70 brain-teasers; a Primer on Cryptarithmetic; books and links to alphametics on the Web. |
| CuriousMath Include news, math tricks, methods, facts, trivia, mostly posted by users. |
| David_Singmaster__List_of_Available_Material Teaching and recreational items in this personal collection. |
| The_Diamond_16_Puzzle New version of the classic puzzle using row/column/quadrant permutations to display symmetries of graphic designs. Has link to a site on the underlying mathematics (Diamond Theory). |
| A_Disproof_of_Pythagoras\'_Theorem? A method of disproving the Theorem of Pythagoras is presented. The author is adamant that this is intended only as a puzzle to find the mistake in the arguments, and not as a serious proposal. |
| The_Eugène_Strens_Recreational_Mathematics_Collection A special collection at the University of Calgary, including the archives of Martin Gardner. There is a searchable online index. |
| Eureka The annual journal of the Archimedeans, the mathematical society of the University of Cambridge. It regularly contains articles on recreational mathematics. |
| Fair_Dice Contains a complete list of all possible Fair Dice, most of which are not cubes. Includes pictures. |
| Famous_Curves Visual animations of famous curves. |
| Fast_Arithmetic_Tips Three categories: defensive - know to check an answer, offensive - fast mental calculations, and math magic. |
| Fibonacci_numbers_and_the_Pascal_triangle The relation between Fibonacci numbers and Pascal's triangle. English/German/Serbian. |
| Final_Answers Numerous facts including formulas, magic tricks, fallacies, recreations compiled by Dr. Gerald P. Michon. |
| Fun_With_Mathematics Includes pages on the topics of primes, fibonacci numbers, PI computation, data encryption and links to calculator programs. |
| Gardner_Index Rough index to the fifteen books containing Martin Gardner's Mathematical Games articles from Scientific American. |
| Geometric_Packing_Problems By Joseph Malkevitch: "Given one shape X how and when can one pack identical copies of this shape into another shape Y?" |
| HAKMEM A collection of problems from MIT. Work reported herein was conducted at the Artificial Intelligence Laboratory, a Massachusetts Institute of Technology research program. |
| How_To_Manually_Find_A_Square_Root The way to do find a square root without a calculator. |
| Iamond A page on polyiamond puzzles. Includes many pages on tessellation. |
| Jlpe\'s_Number_Recreations_Page Features original number recreations by the author, such as generalized perfect numbers, digital diversions, diophantine equations, didactic numbers, and number theory. |
| Look_and_Say_Sequence_Generator Creates a special kind of summation formula created by John Conway. |
| MAA_Library_List_in_Recreational_Mathematics Book list split into categories. Includes title, author, publisher and date information about each book. |
| MAT_007_I_News A newsletter edited by undergraduates of the Department of Mathematics at the University of Toronto. Includes some online copies. |
| Math_Forum__2001_Mathematics_Game A contest that asks to write all integers from 1 to 100 using only the digits 2,0,0,1 and arithmetic operations. |
| Math_Forum__2002_Mathematics_Game A contest where the contestants have to write all integers from 1 to 100 using only the digits 2,0,0,2 and arithmetic operations. |
| Math_Forum__Algebra_Problem_of_the_Week View this week's algebra problem or those of previous weeks. |
| Math_in_the_Movies A guide to major motion pictures with scenes of real mathematics. |
| Math_Magic_By_Computer Interactive java puzzles and activities in different mathematical topics. |
| Mathematical_Diversions Mostly original diversions in mathematics and word play. |
Català
English
Español
Français
Polski
Português
Türkçe
silent ringtonefunny ringtonestracfone ringtonesvoice ringtoneslsu ringtones
12.5 Light Years from the Sun
The Nearest Stars
The closest star to the Sun is only 7000 times further than the edge of
our solar system. This map shows all of the stellar systems that lie
within 12.5 light years from us.
250 Light Years from the Sun
The Solar Neighbourhood
A large proportion of the stars visible with the naked eye are within
250 light years. This map shows this tiny section of our galaxy that
surrounds our Sun.
5 000 Light Years from the Sun
The Orion Arm
The local arm of our galaxy is called the Orion Arm. It is depicted
here showing the millions of stars interspersed with clouds of
interstellar gas.
50 000 Light Years from the Sun
The Milky Way Galaxy
Our galaxy is a loose spiral disc of two hundred billion stars rotating
around a compact centre. This is a diagram showing the main features
of the Galaxy.
500 000 Light Years from the Sun
The Satellite Galaxies
The Milky Way is surrounded by several dwarf galaxies slowly orbiting
it in periods of billions of years. This map shows the nearest of
these satellite galaxies.
5 Million Light Years from the Sun
The Local Group
The Milky Way is gravitationally bound to two other large spiral
galaxies as well as dozens of dwarf galaxies. This local group of
galaxies is illustrated here.
100 Million Light Years from the Sun
The Virgo Supercluster
The local group of galaxies is just one of many centred around the
massive Virgo Cluster. Collectively, all of these groups and clusters
form a unit known as the Virgo Supercluster shown here.
1 Billion Light Years from the Sun
The Neighbouring Superclusters
The distribution of galaxies in the universe is far from regular. They
tend to clump together into huge supercluster formations. This map
shows many of the superclusters within 1 billion light years of us.
14 Billion Light Years from the Sun
The Visible Universe
Although our knowledge of the large scale structure of the universe is
incomplete, many large and small scale features are visible right out
to the very edge of the visible universe. The entire universe is fairly
uniform, as this map shows.
This web page created by Richard Powell.
Last updated: 30 Jul 2006
Visits since 1 Aug 2000:
var site="sm1singinglemon"
Glossary
This is a glossary which should hopefully explain most of the
unexplained terms used in this web page.
Useful Links
This is my attempt at a list of other web pages which have maps and
other useful data on various aspects of the universe.
Negative Images
Here are some negative image versions of some of the maps on this
web page, showing dark objects against a white background, which may be
easier to print.
Copyright
This is a formal copyright statement concerning the text, maps and images
used on this website for anybody who wants to copy or use parts of this
website.
"The choice is the universe or nothing." - H.G. Wells
