A 'space-ball' experiment to specify the nature of gravity in the solar system
| Autor: | Alexander P. Yefremov, Alexandra A. Vorobyeva |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Physics
020301 aerospace & aeronautics Solar System Gravity (chemistry) biology Aerospace Engineering Astronomy Venus 02 engineering and technology Trajectory of a projectile biology.organism_classification 01 natural sciences General Relativity and Quantum Cosmology Orbit 0203 mechanical engineering Gravitational field Planet Physics::Space Physics 0103 physical sciences Gravity assist Astrophysics::Earth and Planetary Astrophysics 010303 astronomy & astrophysics |
| Zdroj: | Acta Astronautica. 186:438-444 |
| ISSN: | 0094-5765 |
| DOI: | 10.1016/j.actaastro.2021.06.005 |
| Popis: | The high sensitivity of a planet's gravity assist (GA) to changes in test-body impact parameter prompts a space experiment that tests the nature of gravitational fields in the solar system. The Sun, Earth, and Venus can serve as a space-borne laboratory with a primitive space probe (“space ball”) as a test body moving on a ballistic trajectory from Earth to Venus, producing GA, and backward to Earth's orbit. We show that in Newton and Einstein (Schwarzschild) gravity, the probe's final positions, which are reached concurrently, may differ markedly, and an Earth-based observer can definitively measure that difference. |
| Databáze: | OpenAIRE |
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