Historical eventNovember 142003
Sedna (dwarf planet)
Astronomers discover Sedna, a distant trans-Neptunian dwarf planet.
In context
- When
- Friday, November 14 200323 years ago
- Category
- Historical eventA dated happening — a battle, treaty, launch, discovery, disaster or decision — recorded on this calendar day.
- Era
- 21st century · 2000s
- Recorded from
- Wikipedia “On this day” feed
At a glance
Dates: From 2003.
What happened
Astronomers discover Sedna, a distant trans-Neptunian dwarf planet.
November 14 through the years
Other entries on the same calendar day, in order.
- 2001War in Afghanistan (2001–2021)
- 20012001 Kunlun earthquake
- 2003Michael E. Brown
- 2003Sedna (dwarf planet)
- 20082008 G20 Washington summit
- 2008Space Shuttle Endeavour
- 2010Red Bull Racing
- 2012Israel
- 20162016 Kaikōura earthquake
- 2017Rancho Tehama shootings
- 2019Saugus High School shooting
Also in 2003
- September 12Typhoon MaemiTyphoon Maemi, the strongest recorded typhoon to strike South Korea, made landfall near Busan.
- September 12Steam (service)The first public release of Steam, a distribution service for computer games, was made available for download.
- September 12United NationsThe United Nations lifts sanctions against Libya after that country agreed to accept responsibility and recompense the families of victim…
- September 12Iraq WarIraq War: In Fallujah, U.S. forces mistakenly shoot and kill eight Iraqi police officers.
- September 14Kumba YalaPresident Kumba Ialá (pictured) of Guinea-Bissau was deposed in a bloodless military coup.
- September 142003 Estonian European Union membership referendumIn a referendum, Estonia approves joining the European Union.
- November 17Arnold SchwarzeneggerActor Arnold Schwarzenegger's tenure as the governor of California begins.
- October 20Sloan Great WallThe Sloan Great Wall, once the largest cosmic structures known to humanity, is discovered by students at Princeton University.
Sources
- Wikipedia article (text, CC BY-SA 4.0)
- Licence: CC BY-SA 4.0 for adapted text · how we source this
Cite this page
“Sedna (dwarf planet)”, What's On This Date, https://whatsonthisdate.com/app/event/sedna-dwarf-planet-2003-november-14, accessed October 27, 2026.
Cite the underlying source as well — the source links above go to the record this entry is adapted from.
Questions about this entry
When did Sedna (dwarf planet) happen?
November 14 2003 — 23 years ago, on a Friday.
Where does this text come from?
Wikipedia “On this day” feed. Summaries are short adaptations that link back to the source, not reprints.
How do I cite this page?
Use the ready-made citation near the sources at the bottom of the page, and follow the source link to cite the underlying record as well.
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