Stellarium is a free open source planetarium for your computer. It shows a realistic sky in 3D, just like what you see with the naked eye, binoculars or a telescope.

The free space simulation that lets you explore our universe in three dimensions

The Algorithmic Beauty of Plants was originally printed by Springer-Verlag in 1990 (second printing 1996). (See our list of known errors from the print version.) An electronic version has been produced using the original LaTeX files and digital illustrations.

roject Euler is a series of challenging mathematical/computer programming problems that will require more than just mathematical insights to solve. Although mathematics will help you arrive at elegant and efficient methods, the use of a computer and programming skills will be required to solve most problems.

Botanicalls Kits let plants reach out for human help! They offer a connection to your leafy pal via online Twitter status updates to your mobile phone. When your plant needs water, it will post to let you know, and send its thanks when you show it love.

This java applet is an electronic circuit simulator. When the applet starts up you will see an animated schematic of a simple LRC circuit. The green color indicates positive voltage. The gray color indicates ground. A red color indicates negative voltage. The moving yellow dots indicate current.

Yikes! You are surfing a paper airplane on an invisible wave of air that you create with a piece of cardboard. With practice you learn how to levitate the origami hang glider using only your hands to create the wave.

Logisim is an educational tool for designing and simulating digital logic circuits.

Golly is an open source, cross-platform application for exploring Conway's Game of Life and other cellular automata. The primary authors are Andrew Trevorrow and Tomas Rokicki, with code contributions by Tim Hutton, Dave Greene and Jason Summers.

LaTeX Editor, called later LEd, is an environment for rapid TeX and LaTeX document development.

I've been inspired to create a new blog for two reasons:

I love corewar and programming in redcode. I spend far too much of my online time creating websites that provide me with an income. Now I'd like to claim back some of that time for something I enjoy.
To show corewar is alive and well in 2008!

A webcomic of romance, sarcasm, math, and language.

This clip is raw from Camera E-8 on the launch umbilical tower/mobile launch program of Apollo 11, July 16, 1969. This is an HD transfer from the 16mm original.

Stellarium is a free open source planetarium for your computer. It shows a realistic sky in 3D, just like what you see with the naked eye, binoculars or a telescope.

This site supports a course and a textbook that guide students through the construction of a modern, full-scale computer system (hardware and software) from first principles. In the process, the students practice many major computer science (CS) abstractions studied in typical CS courses and make them concrete through 12 guided implementation projects.

ORBITER is a free flight simulator that goes beyond the confines of Earth's atmosphere. Launch the Space Shuttle from Kennedy Space Center to deploy a satellite, rendezvous with the International Space Station or take the futuristic Delta-glider for a tour through the solar system - the choice is yours.

Void your warranty, violate a user agreement, fry a circuit, blow a fuse, poke an eye out. Make: The risk-takers, the doers, the makers of things... Welcome to Make: Online!