What does 2001 stand for? 

2001

2001 (MMI) was a common year starting on Monday of the Gregorian calendar, the 2001st year of the Common Era (CE) and Anno Domini (AD) designations, the 1st year of the 3rd millennium and the 21st century, and the 2nd year of the 2000s decade. 2001 was dominated by September 11 attacks against the United States by Al-Qaeda, which killed 2,977 people and instigated the global war on terror. The United States led a multi-national coalition in a four-month long invasion of Afghanistan after the Taliban government did not extradite Al-Qaeda leader Osama bin Laden. Space milestones in 2001 were numerous, the most notable being the first spacecraft landing on an asteroid, American entrepreneur Dennis Tito becoming the first space tourist, and the first discovery of an atmosphere on an exoplanet. In addition, the year witnessed the first sequence of the human genome, the first self-contained artificial heart, and the first clone of a human embryo.

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