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Variations in H2O/OH absorption band strength with time of lunar day exhibit strong dependence on latitude and terrain type.

The ESA-JAXA BepiColombo mission will provide simultaneous measurements from two spacecraft, offering an unprecedented opportunity to investigate magnetospheric The BepiColombo mission to Mercury Edited by Johannes Benkhoff, Go Murakami and Ayako Matsuoka B A. Milillo

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An off-line scan for nontriggered gamma-ray bursts (GRBs) in the BATSE daily records at 1024 ms time resolution covering about 7 yr of observations gave 1353 nontriggered and 1581 triggered GRBs. The scan efficiency was measured by adding artificial test bursts to the data. The distribution could be extended log N-log P down to peak fluxes, photons cm Ϫ2 s Ϫ1 . Previous indications of a turnover at small P are not confirmed. P ∼ 0.1 The distribution cannot be fitted with a standard candle model with a nonevolving GRB source log N-log P population, assuming that there are no large non-GRB contaminations. It is likely that the intrinsic luminosity function of GRBs is wide.

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