Earth S

At the Earth's Core, by Edgar Rice Burroughs When David Innes and his inventor friend Abner Perry pierced the Earth's crust in their Iron Mole, never did they expect to find a fantastic inner world of eternal daylight! A world where prehistoric monsters still live and battle with cave men and... Platforms: Windows

Earth albedo is the sunlight reflected off the Earth's surface. The Earth albedo induces power in solar cells on spacecrafts just like direct sunlight. The Earth Albedo Toolbox may be used to calculate the amount of Earth albedo arriving at an object in space, maintaining information of direction... Platforms: Matlab

This spacecraft begins in a GTO and spirals out of Earth's SOI, then orbits around the sun and spirals in to Mars. This model uses ODE23 to integrate a 4-body gravitational model including a forcing function. The engine has an Isp of 3000 sec and a thrust of 200 mN. This was basically a code I... Platforms: Matlab

The EJS Earth Orbit model illustrates the Copernican theory of Earth's orbit around the sun. The top window shows a view from outside the celestial sphere. The simulation shows the moving Earth along with its axis or rotation and the line of sight from Earth, through Sun, to the Celestial Sphere.... Platforms: Mac

The EJS Equinox Precession model illustrates the Copernican theory of Earth's orbit around the sun. The top window shows a view from outside the celestial sphere. The simulation shows the moving Earth along with its axis or rotation and the line of sight from Earth, through Sun, to the Celestial... Platforms: Mac

DX_Central is a desktop application for those interested in observing the earth's sun or it's effect on radio propagation. This small application provides images of the sun and vital, timely information about solar activity in a way that is concise and easy to use. Information displayed is from... Platforms: Windows

DX_Central is a desktop application for those interested in observing the earth's sun or it's effect on radio propagation. This small application provides images of the sun and vital, timely information about solar activity in a way that is concise and easy to use. Information displayed is from... Platforms: Linux

GreatCirc is a tool for calculating Great Circle distances on the earth's surface, and plotting points and great circle paths on a world map. The "great circle path" is the shortest direct route between two points on the earth's surface. Because the earth is a globe, the shortest path between... Platforms: Windows

In Furball Frenzy you have to use powerful lightning traps to capture the invading Furballs as they attempt to gobble up Earth`s candy supply. It`s an awesome responsibility to protect the candy supply for the entire planet and you will experience this unique challenge. Collect and use... Platforms: Windows

This is a PDF-File which contains an Exposé about astronomical influences to earth's climate.The original language of the text is german. Platforms: Windows, Mac, BSD

Do you plot Earth-orbiting trajectories? Would you like to know how your orbit compares to the size of the Earth? If so, EARTH_SPHERE will help get you there.This function is a modification of the built-in MATLAB command SPHERE. Rather than producing a sphere with a radius of 1, the radius of the... Platforms: Matlab

Earth is where we were born, where we live and where we depend on. We always call it Mother the Earth. She is not only the flat ground shape to appear, she also has thousands of changes of terrains. Mountain, swamp, desert, plain… all terrains have its own beauty, the earth style templates were... Platforms: Windows

Do you remember the early 80's game of Missile Command? This is the supreme graphical version based loosely on that game. Intense graphics and excellent sound effects will keep you playing for hours. You control an advanced UFO designed for speed and destruction. You must save the Earth's... Platforms: Windows

Earth is under fire by Colossus, a battleship the size of a city. Using powerful laser cannons, it has destroyed most of Earth's defence forces, while its many troops clean up the rest of the planet. All expect for 5 warriors. The Battletoads, who are well aware of evil forces in the galaxy, join... Platforms: Windows

It's keen to be green! In these times of global climate change, the earth needs a helping hand. Use your matching skills to identify and react to environmental concerns in every nation of the world. As Director of the newly formed World S.A.F.E. organization, you'll receive reports of potential... Platforms: Mac

The Kepler System model simulates Kepler's final theory of planetary motion. In this theory the planets orbit in ellipses with Sun at one focus (Kepler's First law). These elliptical orbits are not necessarily all in the same plane. A line from Sun to the planet sweeps out equal areas in equal... Platforms: Mac

The Eratosthenes model displays the shadows cast by two gnomons (sticks) at different locations on Earth. For one gnomon, Sun is directly overhead (as would be the case if the gnomon was on the Tropic of Cancer at the summer solstice). The other gnomon is due north of the first gnomon. The sizes... Platforms: Mac

The Stellar Aberration 3D Model illustrates the phenomenon known as the aberration of starlight, first reported by James Bradley in 1729. Aberration occurs because light has a finite speed, and thus light from a star takes a finite amount of time to travel through the tube of a telescope. During... Platforms: Mac

The Stellar Aberration 2D Model illustrates the phenomenon known as the aberration of starlight, first reported by James Bradley in 1729. Aberration occurs because light has a finite speed, and thus light from a star takes a finite amount of time to travel through the tube of a telescope. During... Platforms: Mac

The Hubble Space Telescope is a free screensaver that will delight all fans of the world outside our own. It is a selection of twenty of the best images obtained by the Hubble space telescope.The Hubble space telescope is continuously orbiting around the Earth, and is named after the astronomer... Platforms: Windows