2004/11/03 by Orfeu Bertolami, O. Bertolami, Bertolami, O. +3 · 1 citation
Physics and Astronomy · #FOS: Physical sciences #General Relativity and Quantum Cosmology (gr-qc) #Planetary Science and Exploration #Space Science and Extraterrestrial Life #gr-qc
paper · pdf · doi:10.48550/arxiv.gr-qc/0411020
Talk presented by O.B. at the XIV Encontro Nacional de Astronomia e Astrof\'ısica, Angra do Hero\'ısmo, Açores, 22-23 July 2004. 9 pp. 3 figs
arxiv created 2004/11/03 · openalex publication_date 2004/11/03 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Launched more than thirty years ago and now drifting in space with no further contact, the Pioneer 10 and 11 spacecraft are currently at the center of a small but developing concern: are they under the influence of an anomalous acceleration that reflects new, yet unknown physics, or merely experiencing some unexpected technical problem ? The proposals vary from basic engineering principles to extra spatial dimensions, but most probably an answer can only be obtained after a dedicated mission is underway.