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The Scientific Investigation of Unidentified Aerial Phenomena (UAP) Using Multimodal Ground-Based Observatories
Wesley Andrés Watters, Abraham Loeb, Frank Laukien +35
(Abridged) Unidentified Aerial Phenomena (UAP) have resisted explanation and have received little formal scientific attention for 75 years. A primary objective of the Galileo Proje…
SkyWatch: A Passive Multistatic Radar Network for the Measurement of Object Position and Velocity
Mitch Randall, Alex Delacroix, Carson Ezell +7
(Abridged) Quantitative three-dimensional (3D) position and velocity estimates obtained by passive radar will assist the Galileo Project in the detection and classification of aeri…
Detection Rate of <50-meter Interstellar Objects with LSST
Carson Ezell, Abraham Loeb
The previous decade saw the discovery of the first four known interstellar objects due to advances in astronomical viewing equipment. Future sky surveys with greater sensitivity wi…
"Down to Earth" Limits on Unidentified Aerial Phenomena in Ukraine (Comment on arXiv:2208.11215)
Abraham Loeb
A recent report by astronomers about Unidentified Aerial Phenomena (UAP) in Ukraine (arXiv:2208.11215) suggests dark phantom objects of size 3-12 meters, moving at speeds of up to…
Exploration of the outer solar system with fast and small sailcraft
Slava G. Turyshev, Peter Klupar, Abraham Loeb +4
Two new interplanetary technologies have advanced in the past decade to the point where they may enable exciting, affordable missions that reach further and faster deep into the ou…
Propulsion of Spacecrafts to Relativistic Speeds Using Natural Astrophysical Sources
Manasvi Lingam, Abraham Loeb
In this paper, we explore from a conceptual standpoint the possibility of using natural astrophysical sources to accelerate spacecrafts to relativistic speeds. We focus on light sa…