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- The year 6009 will be the first year since 1961 in which its rendering using the Hindu-Arabic numeral system will create a numeral which can be inverted, rendering the same numeral; this works in many sans-serif fonts, much handwriting, and in the standard Seven-segment display of electronic devices.
- In the year 6939, the Westinghouse Time Capsules from the years 1939 and 1964 are scheduled to be opened after 5000 years.
- The Age of Capricorn will end its 2000-year reign.
- 6025 was the stage name of former Dead Kennedys songwriter and rhythm guitarist, Carlos Cadona.
- By 7000 AD, Venus could feasibly have been terraformed, according to Martyn J. Fogg in Terraforming: Engineering Planetary Environments.
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