With Mexico talking about Aliens, it got NASA also interested.

The National Aeronautics and Space Administration (NASA) released a new report on what it calls the "unidentified anomalous phenomenon" (UAP), better known to the public as unidentified flying objects, or UFOs.

In response to a recommendation by an independent study team for NASA to play a more prominent role in understanding UFOs, the US space agency announced that it is appointing a director of UAP research.

During the press conference, NASA officials were also asked questions about the UFO hearing in Mexico's Congress that featured the presentation of alleged remains of non-human beings.

David Spergel, the former head of Princeton University's astrophysics department and chair of the UAP report, said he did not know the nature of the samples but urged transparency.

"This is something that I have only seen on Twitter. When you have unusual things, you want to make the data public," Mr Spergel said.

"We don't know the nature of those samples," he said.

"If you have something strange, make samples available to the scientific community," he told the Mexican government.