Science ❯ Astronomy ❯ Interstellar Objects
Characteristics Discovery Observations Avi Loeb Trajectory Behavior Comets Scientific Debate Comet Characteristics Cometary Characteristics Discovery and Characteristics Observation Techniques Color Changes Detection Methods Significance Composition Discovery and Observation Comparative Analysis Origin Nickel Tetracarbonyl Hubble Space Telescope Observations Scientific Research Mars Missions Alien Technology Astrophysical Phenomena Juno Spacecraft Historical Significance Historical Context Theories of Origin Nuclear Power Alien Theories NASA Discoveries Observational Techniques Research Research Proposals Speculations Origin Theories Observational Data Research Findings Oumuamua Jupiter Approach NASA Observations Radio Signals Close Approach to Earth Phenomena Orbital Characteristics Anomalies Artificial Origin Trajectory Analysis Formation Processes Space Missions Speculation
ALMA observations days after perihelion enabled the first deuterium measurement on an interstellar visitor.
