A5088459822- Astro and Planetary Science
- Geophysics and Gravity Measurements
- Planetary Science and Exploration
- Stellar, planetary, and galactic studies
- Geomagnetism and Paleomagnetism Studies
- Solar and Space Plasma Dynamics
- Nuclear Materials and Properties
- Relativity and Gravitational Theory
- Nuclear reactor physics and engineering
- Scientific Research and Discoveries
- Pulsars and Gravitational Waves Research
- Cosmology and Gravitation Theories
- Spacecraft Dynamics and Control
- Geophysics and Sensor Technology
- Scientific Measurement and Uncertainty Evaluation
- Astronomical Observations and Instrumentation
- Spacecraft Design and Technology
- Quantum chaos and dynamical systems
- GNSS positioning and interference
- Space Satellite Systems and Control
- Spacecraft and Cryogenic Technologies
- High-pressure geophysics and materials
- Experimental and Theoretical Physics Studies
- Geology and Paleoclimatology Research
- History and Developments in Astronomy
University of Pisa
2010-2025
Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
2007-2020
Istituto Nazionale di Fisica Nucleare
1969-2017
Purple Mountain Observatory
2007
European Space Research and Technology Centre
1993
Observatoire de Paris
1992-1993
Cornell University
1989
Queen Mary University of London
1986
University of Glasgow
1983
National Agency for New Technologies, Energy and Sustainable Economic Development
1982
The small satellite 'Galileo Galilei' (GG) will test the universality of free fall and hence weak equivalence principle which is founding pillar general relativity to 1 part in 1017. It use proof masses whose atoms differ substantially from one another their mass energy content, so as maximize chance violation. GG improve by four orders magnitude current best 'Eöt-Wash' tests based on slowly rotating torsion balances, have been able reach thermal noise level. In GG, expected violation signal...
We report the results of our investigation orbit Pluto as obtained from LONGSTOP 1B numerical integration outer planets spanning 100 Myr. have analyzed all critical arguments associated with 3 : 2 resonance in mean motion Neptune up to degree eccentricities and inclinations. The longitude libration a period about 19,900 years is confirmed; librating argument has very large (84°) remarkably constant maximum excursion. 3.78-Myr pericenter also confirmed. A third belonging an entirely new class...
Through the contributions of Galileo, Newton, and Einstein, we recall universality free fall (UFF), weak equivalence principle (WEP), strong (SEP), in order to stress that general relativity requires all test masses be equally accelerated a gravitational field; is, it UFF WEP hold. The possibility testing this crucial fact with null, highly sensitive experiments makes these most powerful tests theory. Following Schiff, derive redshift from special show that, as long clocks are affected by...
Tests of the universality free fall and weak equivalence principle probe foundations general relativity. Evidence a violation may lead to discovery new force. The best torsion balance experiments have ruled it out ${10}^{\ensuremath{-}13}$. Cold-atom drop tests reached ${10}^{\ensuremath{-}7}$ promise do 7 10 orders magnitude better, on ground or in space. They are limited by random shot noise, which depends number $N$ atoms clouds (as $1/\sqrt{N}$). As mass-dropping nonuniform gravitational...