Observations of the gravity field of Mars reveal a planet that has responded differently in its northern and southern hemispheres to major impacts and volcanic processes. The rough, elevated southern hemisphere has a relatively featureless gravitational signature indicating a state of near-isostatic compensation, whereas the smooth, low northern plains display a wider range of gravitational ano...

Mars Global Surveyor (MGS) successfully completed its rst phase of aerobraking in early 1998 and is the rst planetary mission to use aerobraking as a primary means of customizing its orbit to achieve its mission objectives [1]. The aerobraking requirements together with post-launch anomalies [2] presented a unique challenge to provide accurate predictions of the aerothermodynamic environment of...

We review estimates of small scale fluctuations due to extragalactic point sources in the Planck Surveyor frequency bands. While our undestanding of the spectral and evolutionary properties of these sources is far from complete, conservative estimates allow us to confidently conclude that, in the frequency range 100–200 GHz, their contaminating effect is well below the expected anisotropy level...

Differences in latency to the air from the same rat when stressed and unstressed were comparable to differences found when one rat was stressed and another unstressed. This observation would also suggest that the discriminable odor did not derive from a chronic stress state, but arose immediately from a given stressing. Neither can the discrimination be reasonably attributed to greater familiar...

We present a parallel implementation of a map-making algorithm for CMB anisotropy experiments which is both fast and efficient. We show for the first time a Maximum Likelihood, minimum variance map obtained by processing the entire data stream expected from the Planck Surveyor, under the assumption of a symmetric beam profile. Here we restrict ourselves to the case of the 30 GHz channel of the ...