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- Publications
- Influence
A test of general relativity using radio links with the Cassini spacecraft
- B. Bertotti, L. Iess, P. Tortora
- Physics, Medicine
- Nature
- 25 September 2003
According to general relativity, photons are deflected and delayed by the curvature of space-time produced by any mass. The bending and delay are proportional to γ + 1, where the parameter γ is unity… Expand
Direct activation of cardiac pacemaker channels by intracellular cyclic AMP
- D. DiFrancesco, P. Tortora
- Biology, Medicine
- Nature
- 9 May 1991
CYCLIC AMP acts as a second messenger in the modulation of several ion channels1–9 that are typically controlled by a phosphorylation process10. In cardiac pacemaker cells, adrenaline and… Expand
Gravity Field, Shape, and Moment of Inertia of Titan
- L. Iess, N. Rappaport, +5 authors S. Asmar
- Medicine
- Science
- 12 March 2010
Titan Through to the Core Gravity measurements acquired from orbiting spacecraft can provide useful information about the interior of planets and their moons. Iess et al. (p. 1367; see the… Expand
JUpiter ICy moons Explorer (JUICE): An ESA mission to orbit Ganymede and to characterise the Jupiter system
- O. Grasset, M. K. Dougherty, +15 authors T. Hoolst
- Geology
- 1 April 2013
Past exploration of Jupiter's diverse satellite system has forever changed our understanding of the unique environments to be found around gas giants, both in our solar system and beyond. The… Expand
The Gravity Field and Interior Structure of Enceladus
- L. Iess, D. Stevenson, +8 authors P. Tortora
- Geology, Medicine
- Science
- 4 April 2014
Inside Enceladus Saturn's moon Enceladus has often been the focus of flybys of the Cassini spacecraft. Although small—Enceladus is roughly 10 times smaller than Saturn's largest moon, Titan—Enceladus… Expand
The Tides of Titan
- L. Iess, R. Jacobson, +7 authors P. Tortora
- Physics, Medicine
- Science
- 27 July 2012
Getting to Know Titan Gravity-field measurements provide information on the interior structure of planets and their moons. Iess et al. (p. 457; published online 28 June) analyzed gravity data from… Expand
Late Quaternary landscape evolution of the Tiber River delta plain (Central Italy): new evidence from pollen data, biostratigraphy and 14 C dating
- P. Bellotti, G. Calderoni, +4 authors V. Zernitskaya
- Geology
- 1 December 2007
Measurement of Jupiter’s asymmetric gravity field
- L. Iess, W. Folkner, +24 authors S. Bolton
- Physics, Medicine
- Nature
- 7 March 2018
The gravity harmonics of a fluid, rotating planet can be decomposed into static components arising from solid-body rotation and dynamic components arising from flows. In the absence of internal… Expand
Measurement and implications of Saturn’s gravity field and ring mass
- L. Iess, B. Militzer, +10 authors M. Zannoni
- Medicine, Geology
- Science
- 17 January 2019
Cassini's last look at Saturn's rings During the final stages of the Cassini mission, the spacecraft flew between the planet and its rings, providing a new view on this spectacular system (see the… Expand
Spacecraft Doppler tracking: Noise budget and accuracy achievable in precision radio science observations
- S. Asmar, J. Armstrong, L. Iess, P. Tortora
- Physics
- 1 April 2005
[1] We discuss noise in Doppler tracking of deep space probes and provide a detailed noise model for Doppler radio science experiments. The most sensitive current experiments achieve fractional… Expand