I've replaced the images of Valles Marineris in the gallery with four new ones. The colours are not realistic but the scenes now look more dramatic and give a better sense of scale. Here's one of the images.

Kees has updated his site with Mars renders of the MER2003 landing sites using 1/128 degree MOLA data.

Here's some screenshots from the latest version of Gravity3D. Shot 1, Shot 2, Shot 3. They show the new motion blur feature. Each scene contains roughly one million stars and ran at about 4 frames per second on my machine.

There's a new version of the Gravity3D program available for download. New features include, SIMD and SMP support, distance attenuation and the software now allows more than two galaxies.

Here's an image from the gravity program. It shows two galaxies side on, both emitting jets like those detected from some black holes. The jets in the image are the result of just the gravity equation (no electro magnetic forces). Also in the image are arc shapes forming the outline of an hourglass, a shape sometimes seen in space. Once the galaxy settles down and the remaining stars find stable orbits the jets and arcs disappear.

I've added two more images to the gallery, they were created using the gravity program and show a simulation of two galaxies colliding. The number of stars used in each image was 15 million.

I recently printed one of the Mars topographic globe images showing in the gallery as an A2 poster. I used a special high resolution version of the image (8000x6000). I will be making posters of some of my images available for purchase.