The Early Cretaceous Greater Ontong Java Event in the Pacific Ocean may have covered ca. 1% of the Earth's surface with volcanism. It has puzzled scientists trying to explain its origin by several mechanisms possible on Earth, leading others to propose an extraterrestrial trigger to explain this event. A large oceanic extraterrestrial impact causing such voluminous volcanism may have traces of ...

This study presents a new approach to the concept of cosmic consciousness integrated in current neuroscience knowledge and discusses implications for the search for extraterrestrial intelligence. It also examines different aspects related to consciousness and how it may play a key role in the understanding of the search for extraterrestrial intelligence and life in the Universe and its implicat...

The vast range of the electromagnetic spectrum and the wide range of potential signaling methods make comprehensive searches for extraterrestrial signals difficult. Perhaps because of this, in nearly five decades of SETI searches no indications of extraterrestrial civilization have been seen. Expanding technologies and new instruments can help close the gaps in the SETI search space. New techni...

This paper presents a volumetric representation for the global illumination within a space based on the radiometric quantity irradiance We call this representation the irradiance volume Although irradiance is traditionally computed only for surfaces we extend its de nition to all points and directions in space The irradiance volume supports the reconstruction of believable approximations to the...

Mobile robots are recognized as being essential for the exploration of planets in our solar system. In this paper, we introduce a new approach for a self-localization and navigation unit for mobile platforms in extraterrestrial environments. Our work is based on a general concept for self-localization in unstructured environments. It has been implemented for earthbound environments and successf...

Study of the beam propagation behavior through oceanic media is a challenging subject. In this paper, based on generalized Collins integral, the mean irradiance profile of Gaussian laser beam propagation through ocean is investigated. Power In Special Bucket (PIB) is calculated. Using analytical expressions and calculating seawater transmission, the effects of absorption and scattering on beam ...

Laser mass spectrometry is a powerful tool for the sensitive, selective, and spatially resolved analysis of organic compounds in extraterrestrial materials. Using microprobe two-step laser mass spectrometry (muL(2)MS), we have explored the organic composition of many different exogenous materials, including meteorites, interplanetary dust particles, and interstellar ice analogs, gaining signifi...

It has often been concluded that searches for extraterrestrial intelligence (SETI) should concentrate on attempts to receive signals in the microwave region, the argument being given that communication can occur there at minimum broadcasted power. Such a conclusion is shown to result only under a restricted set of assumptions. If generalized types of detection are considered-in particular, phot...

ictor X. D. Yang ntario Cancer Institute niversity of Toronto epartment of Medical Biophysics oronto, Ontario M5G 2M9 anada and yerson University epartment of Physics oronto, Ontario M5B 2K3 anada and unnybrook Health Science Center maging Research oronto, Ontario M4N 3M5 Abstract. We measure the tumor vascular response to varying irradiance rates during photodynamic therapy PDT in a Dunning ra...