[en] A new generation of laser interferometers will soon be built that will be capable of detecting astrophysically interesting events like supernovas and black holes. The physics and operation of these detectors is described

[en] From the perspective of the 80s, the origins of the torsion balance seem lost in antiquity. Despite a long history of successful applications, measurement precision has not yet come close to the classical performance limits posed by the fluctuation-dissipation theorem. Significant advances may yet be possible

[en] We review the present status of research on the fifth force in the framework of a simple phenomenological picture. The principal theoretical and experimental questions are outlined, and a summary of the ongoing fifth force experiments is given

[en] Characteristics of a force with range near 1 km and mediated by a scalar singlet are discussed. The predicted composition dependent and composition independent corrections to gravity are consistent with several recent experiments

[en] A review is given of neutrino data from SN1987A in the IMB and KAMIOKANDE detectors. Various consequences of the data are discussed, with particular emphasis on the unusual angular distribution

[en] The specific features and the conditions of validity of the analytic expressions for the average survival probability of the solar neutrinos in the Sun derived for the case of two-neutrino transitions in the linear and exponential density approximations are discussed. A complete, simple and sufficiently accurate analytic description of the solar neutrinos transitions in the Sun is found

[en] We have analyzed gravity and density data from 5 boreholes at the Nevada Test Site (USA). Each hole is approximately 600 meters deep and the holes are relatively close together (≅ 2 km separation). We find that there is 2.5% discrepancy in the gravity gradient when compared to the gradient predicted by a standard Newtonian model of the earth. In contrast, Stacey et al. have found a 0.52% discrepancy in the gravity gradient in a deep mine in Australia. These data may suggest a breakdown of Newtonian gravity, but more probably reflect intermediate range geologic effects that are not incorporated in the model

[en] Recent neutrino-results, solar ⁸B neutrino's, high energy neutrino sources and atmospheric neutrino's, from KAMIOKANDE-II are presented. Future propects in this field are discussed

[en] A silicon detector array has been used to obtain limits for three decay modes of Mo¹⁰⁰. One to two mole-weeks of exposure gives limits of 1 x 10²² years for the neutrinoless mode, 3.8 x 10¹⁸ years for the two-neutrino mode and 5.1 x 10²⁰ years for the Majoron mode. No evidence is found for the Majoron decay mode. The potential exists to improve the detector sensitivity more than one order of magnitude beyond the best limits to date

[en] We have obtained preliminary experimental result about the fifth force by measuring the acceleration-difference between two objects freely falling at the same time with a sensitivity of 10μ Gals. This result shows the feasibility to measure the difference with the precision of a few μ Gals for several pairs of objects