Buzz Aldrin, one of the first two humans to set foot on the moon in July 1969, is now bogged down in a battle with his children over his legacy.

Aldrin, now 88 and living in Florida, has filed suit in a Florida State Court against two of his children for elder exploitation saying they are trying to take his money and his autonomy, as well as taking his foundation in directions he never wanted.

He is undergoing three examinations Tuesday and Wednesday by a social worker, a nurse and a doctor appointed by the court to determine his mental and physical condition. Results are expected in about two weeks, according to his lawyer, Robert W. Bauer of Gainesville, Fla.

Aldrin’s children, Andrew and Janice, filed to be named co-guardians of their father because they say he is being influenced by outsiders and is in cognitive decline and experiencing paranoia and confusion. If they are named guardians, they will have control of the foundation and his finances. A third adult child is not involved.

Aldrin denies the allegations. His suit claiming elder exploitation names the two children and his business manager, Christina Korp. The suit accuses Andrew and Korp of using his money for themselves and accuses Janice of conspiracy, Bauer said.

At issue are the operations of his private company, Buzz Aldrin Enterprises, and his nonprofit ShareSpace Foundation, overseen by his son and daughter. Korp is a board member of ShareSpace Foundation and CEO of Christina Korp Management.

On her LinkedIn page, Korp posted a response to a Wall Street Journal story published Monday on the dispute, saying there were inaccuracies in the story but she was not specific. She said she has “never acted on Buzz’s behalf without his full knowledge, support and cooperation.”

Aldrin, who grew up in Montclair, N.J., has had a distinguished past. He graduated third in his class at West Point and earned a PhD in astronautics from the Massachusetts Institute of Technology. He stepped outside onto the moon minutes after his Apollo crew mate Neil Armstrong, who became the first person to walk on the moon. He also served on Gemini 12 where he successfully proved extravehicular activity could be performed by astronauts, spending over five hours outside the craft.

His foundation is dedicated to educating children about space travel and to promoting travel to Mars. He has been open about bouts with depression and alcoholism in his early years but has been sober for 40 years.