Disclosure in ufology refers to the act of revealing or making public information and evidence about the existence of extraterrestrial life and the government's knowledge of it.
Okay, here's an example to help understand it better. Imagine that you have a secret friend who is from another planet. Nobody knows about your friend, and you have to keep this a secret. Now, one day, you decide to tell your parents about your friend. That is disclosure.
In the same way, many people believe that the government has information about extraterrestrial life that it has been keeping secret. They think that the government should tell the public and disclose the information they have.
Some people who study UFOs (Unidentified Flying Objects) and aliens believe that there have been sightings and encounters with extraterrestrial beings throughout history, but the government has been hiding these facts from the public. They also believe that the government has been suppressing and covering up evidence of these encounters.
Many people hope that disclosure will lead to a better understanding of extraterrestrial life and a more open discussion about it. But, until the government officially confirms the existence of intelligent extraterrestrial life and reveals the information they have, UFO study and disclosure will remain a hot topic among the people who believe in it.