© Copyright Alessandra Kelley
Wayland's Principia is a large egg tempera painting on panel. It illustrates a hard science fiction story in which aliens use a small black hole to power their ship (or rather, community of environments). The black hole is between our viewpoint and the horizon of the Earth, thus the lensing effect.
The other objects are the space habitats of several very different alien races. The stream of tiny multicolored ships rising from the Earth are based on the shapes of electron orbitals.
This painting required a good deal of research, plus some enjoyable anatomical working-out of aliens.
Egg tempera is an ancient technique, used at least as far back as the classical Greeks and Romans (Pliny mentions it, and there are surviving egg tempera Egyptian portraits dating from the Greek Ptolemys). It's a simple medium, of pigments, egg yolk (which, contrary to common belief, does not color the paint yellow), and water. Complete instructions can be found elsewhere on this site.