Top 20 debunked conspiracies

1. The moon landing was faked by NASA
2. The September 11 terrorist attacks were orchestrated by the United States government
3. The existence of a secret group or "New World Order" controlling world events behind the scenes
4. The claim that the Federal Reserve is a secretive and powerful organization controlling the global economy
5. The belief that the HIV/AIDS virus was artificially created and deliberately spread
6. The claim that the assassination of President John F. Kennedy was the result of a conspiracy
7. The idea that certain prominent figures and organizations are involved in satanic or occult practices
8. The belief that a secret group of individuals or organizations are working to create a one-world government
9. The claim that the earth is flat and that the "round earth" idea is a hoax
10. The belief that vaccines are dangerous and cause autism
11. The idea that the US government was involved in the Oklahoma City bombing
12. The claim that the Holocaust was a hoax or greatly exaggerated
13. The belief that 9/11 was an inside job orchestrated by the Bush Administration
14. The claim that Barack Obama was not born in the United States and is therefore ineligible to be President
15. The idea that the government has been covering up evidence of extraterrestrial life
16. The belief that the government is hiding the true cause of AIDS
17. The claim that the Apollo moon landing was filmed in a studio
18. The belief that the United States orchestrated the September 11 attacks as a false flag operation
19. The theory that the Covid-19 pandemic is a hoax or exaggerated to control the population
20. The belief that the earth is hollow and that there are advanced civilizations living within the earth.

It's worth noting that many of these conspiracy theories have been debunked by experts and scientific evidence, and are not considered credible by mainstream scientists, researchers and government officials. Some of them are based on misinformation and misinterpretation of facts, and some of them are lacking evidence and logical reasoning.