ʻOumuamua
The first known interstellar visitor
Discovered in 2017, this cigar-shaped object came from outside our solar system. Its odd shape and unexplained acceleration sparked wild theories — including alien probe.
Image: ESO / M. Kornmesser
Vital statistics
Type
Interstellar Object
Discovered
Oct 19, 2017
Length
~100–1000 m
Speed
26.33 km/s (relative to Sun)
Did you know
Name means 'scout' in Hawaiian.
Fact 01
Showed non-gravitational acceleration leaving the solar system.
Fact 02
Already too distant to study by 2018.
Fact 03
Research & publications
Jump straight into peer-reviewed papers, preprints and authoritative references for ʻOumuamua.
arXiv (preprints)
Open-access preprints in physics & astrophysics.
NASA ADS
The definitive bibliographic database for astronomy.
Google Scholar
Cross-publisher academic search.
Nature
Peer-reviewed articles in Nature & sister journals.
Wikipedia
Encyclopedic overview & onward references.
Tip: ask the Research AI for a curated reading list → /research
