nancy Techie Tues 9-2-97

Do you work too hard to see the sun? Now you can watch the skies from your desk!
check out some celestial software!

Earth and Moon Viewer

lune terre

Welcome to Earth and Moon Viewer.

Viewing the Earth

You can view either a map of the Earth showing the day and night regions at this moment, or view the Earth from the Sun, the Moon, the night side of the Earth, above any location on the planet specified by latitude, longitude and altitude, from a satellite in Earth orbit, or above various cities around the globe.

Images can be generated based on a full-colour image of the Earth by day and night, a topographical map of the Earth, up-to-date weather satellite imagery, or a composite image of cloud cover superimposed on a map of the Earth, a colour composite which shows clouds, land and sea temperatures, and ice, or the global distribution of water vapourExpert mode allows you additional control over the generation of the image. You can compose a custom request with frequently-used parameters and save it as a hotlist or bookmark item in your browser. Please consult the Details for additional information and answers to frequently-asked questions.

Viewing the Moon

In addition to the Earth, you can also view the Moon from the EarthSunnight side, above named formations on the lunar surface. or as a map showing day and night. You can also make expert and custom images of the Moon. A related document compares the appearance of the Moonat perigee and apogee, including an interactive Perigee and Apogee Calculator.

Browser Requirements

To use the Earth and Moon Viewer, you need a graphical Web browser with forms support and the ability to display GIF and JPEG images. In order to pan around the map or globe by clicking within the image, your browser must support “Client-Side Image Maps”—if you don’t know what this means, don’t worry: if your browser doesn’t support the feature, you’ll see a page which explains how to proceed.


The Earth and Moon Viewer would have been enormously more difficult to implement without the help of the software and imagery mentioned in the credits.

Related Software on this Site

Windows users can create images like this in real time, on their own machines, as well as view the sky, stars at the horizon, the solar system, orbits of asteroids and comets, and more with Home Planet, my public domain Earth/Space/Sky simulator available for your downloadingpleasure. Other public domain astronomy and space software available from the same site includes:

On the Web:
Eclipse 2010 — Aku Aku EclipseEclipse 2008 — Nuclear Ninety NorthEclipse 2001 — In Darkness: Africa, and Eclipse 1999 — Expedition to Iran.
Moon at Perigee and Apogee.
Solar System Live: interactive orrery.
Switzerland from Space.
Terranova: a new terraformed planet every day.
Your Sky makes custom star maps for any location on Earth at any date and time.
For Windows:
Home PlanetEarth screen saverSky screen saverMoontoolCraters screen saver, and an Excel catalogue of the Palomar Observatory Sky Survey.
For Unix (X/OpenWindows):
Moontool, and Xsunclock.

All of these packages and more can be located from my home page.

by John Walker