Planetary Sciences
A poster about the solar system. Evolution is shown from a protoplanetary disk (center left) towards planet growth. The Grand Tack and the […]
Stellar-Mass Objects
A poster with the most common objects you will find in a galaxy, most are of stellar mass. Evolution can be […]
Supermassive Black Holes
Supermassive black holes (SMBHs) represent an important aspect of galaxy evolution theory that remains at the frontier of modern research. […]
Definition of Photosphere, Optical Depth and Effective Temperature
The stellar photosphere, the “surface of a star,” is defined as the layer of its atmosphere at an optical depth […]
Migrating Planets
Among the pioneers of the idea of swirling vortices of gas being responsible for the formation of the solar system […]
Liquid Water on Mars
Geomorphological, mineralogical and other evidence of the conditions favoring the existence of water on Mars in liquid phase is reviewed. […]
NGC 7635
The Bubble Nebula is an ionized hydrogen emission nebula 7,800 light years away, created by stellar winds from the Wolf-Rayet […]