Research Paper (postgraduate) from the year 2005 in the subject Physics - Astronomy, , language: English, abstract: The dark matter phenomenon is known since 1933 and it correlates with theformation and the stability of galaxies and other large-scale structures. In the year 1933 FritzZwicky discovered a stabilization effect connected to the Coma cluster of galaxies [Zwicky,F. Helv. Phys. Acta 6, 110 127 (1933)]. The first interpretation of this stabilization effectleaded to the hypothesis of dark matter particles that could correlate with a gravitational effectand that could be involved in the stability of galaxies. Despite the fact that the stability ofgalaxies and galaxy clusters is known since more then 70 years, no consistent experimentaldata is presently known to support the hypothesis of dark matter particles. The assumed darkmatter particles are presently not yet detected. The main experiment regarding dark matterparticles of the year 2004, respectively the CDMS II experiment [D.S. Akerib et al., Phys. Rev. Lett. 93, 211301 (2004)] could not confirm the existence of dark matter particles,respectively of WIMPs (weakly interacting massive particles). Following an alternative interpretation of the stabilization effect performed by galaxies andother large-scale structures connected to a boson field, a special excitation effect was found. This special excitation effect occurs without any presently known form of excitation and it isdetectable in connection with different kind of material samples inside the cavity of a blackbody during laboratory experiments as well as during experiments performed outdoors in freenature. This excitation effect is followed by a regular pattern of emission in the spectral rangeof 160 630 nm at 273 300 K. The regular pattern of emission is uninterrupted detectablefor at least 7 days in connection with samples made of granite and granodiorite.