Aluminous mare basalts are the dominant lithology at the Luna 16 landing site in Mare Fecunditatis. For trace element analysis by micro-INAA techniques, we selected 23 of the 52 Luna 16 basaltic soil fragments studied by Kurat et al. (1976) and used a microcoring technique to extract microgram-sized samples from grain mount thin sections

IAUC 6587 available at Central Bureau for Astronomical Telegrams.

We present calculations that account for the infall of matter onto the heart of a starburst, a condition thought indispensable for causing the large accumulation of matter and the large detected rates of star formation. We center our attention on the rapid evolution of the remnant generated by the collective action of strong stellar winds and

Not Available

Within the preliminary developments related to the Gran Telescopio Canarias, a test rig is being designed for the active control of the support system of the segmented primary mirror. The construction of this test rig will be divided in two phases: the first one will basically consist in the implementation and testing of a displacement sensor

Using optical images and spectra of the bipolar nebula M 2-9 we show that, in addition to the well-known bright inner nebula, the object has fast, highly collimated outflows reaching a total extent of 115". These radially opposed and point-symmetric outer lobes are both redshifted, leading us to model the radiation from them in terms of light