Election Challenge
Refuses to concede after the presidential election and challenges results.
Permanent historical records · Updated 2026-11-03
2020 in United States of America — Page 3
Explore 103 historical events and records for United States of America in 2020.
Historical records for United States of America in 2020
Sorted by month and day. Records with no month are shown last. Showing 23 of 103 unique records.
103Unique records
3 of 3Page
21Named events on this page
15Named people on this page
8Places on this page
November
Post-Election Speech
Claims widespread fraud without evidence after election night.
COVID-19
Promises a national COVID-19 response after being projected president-elect.
COVID-19
Names members of a COVID-19 advisory board.
Post-Election Legal Challenges
Supports legal challenges to election results in multiple states.
December
COVID-19
The United States authorises the Pfizer BioNTech COVID-19 vaccine for emergency use.
Deep Jupiter Hot Spots
Juno observations show Jupiter's equatorial hot spots are wider and deeper than earlier models suggested.
Pfizer BioNTech Vaccine
The United States authorises the Pfizer BioNTech COVID-19 vaccine for emergency use.
Electoral College
The Electoral College confirms Joe Biden's presidential victory.
Electoral College Certification
Electoral College votes confirm Joe Biden’s victory.
Electoral College Vote
Electoral College confirms his presidential victory.
Other events (month unknown)
Arrokoth Gentle Formation
McKinnon and colleagues conclude that Arrokoth's lobes likely joined in a slow, gentle merger during early Solar System formation.
Arrokoth Methanol Ice
Spectral analysis identifies methanol ice and other surface materials on Arrokoth, providing clues to its primitive chemical history.
Coronavirus Pandemic Journalism Expands
The newspaper reported extensively on the coronavirus pandemic, medical research, public policy and its human consequences.
Discovery of AU Microscopii b
Leads confirmation of a young transiting planet around nearby star AU Microscopii.
Discovery of TOI-700 d
Leads confirmation of Earth-size TOI-700 d in the habitable zone of its star.
Discovery of WD 1856 b
Leads discovery of a giant planet transiting a white dwarf star.
Hubble Constant
Refines distance ladder measurements that test the expansion history of the Big Bang universe.
Juno Polar Cyclone Monitoring
Juno observations track the persistent geometric arrangements of cyclones around Jupiter's poles.
Neptune Companion Dark Spot
Hubble detects a smaller temporary dark feature near Neptune's giant northern vortex.
Neptune Dark Storm Reversal
Hubble observations show a large Neptune dark vortex reversing its southward drift and moving back northward.
Nobel Prize
Receives the Nobel Prize in Literature for an unmistakable poetic voice that makes individual existence universal.
Voyager Power Conservation
Directs power-management measures that preserve critical Voyager engineering and science operations as electrical output declines.
How these records were prepared
Generated from the World History Database historical_events table. Identical display records are collapsed; descriptions otherwise retain the stored text. Coverage and source quality vary. Check primary and specialist sources before citing individual historical claims.