Abstract The origin of organic compounds detected in meteorites and comets, some which could have served as precursors life on Earth, remains an open question. aim the present study is to make one more step revealing nature composition materials extraterrestrial particles by comparing infrared spectra laboratory-made refractory residues cometary returned Stardust mission, interplanetary dust pa...

The development of arid zone geomorphology has progressed over the past century from ground-level observations of a limited number of locations through the field traverse mapping of sizeable arid areas to a broad-scale overview of global desert regions assisted by aerial photography and satellite imagery. Extraterrestrial investigations of planetary surfaces and landforms have proceeded in exac...

The recent claim to have discovered evidence of extraterrestrial life on a meteorite from Mars is not compelling, but the study nevertheless has useful heuristic value.