Invisibility cloaks, antigravity devices, traversable wormholes, and a proposal to tunnel through were some of the bizarre, experimental technologies the US government spent millions of taxpayer dollars on.

The documents, which include nearly 1,600 pages of reports, proposals, contracts, and meeting notes, reveal some of the stranger priorities of AATIP, a secretive Department of Defense program that ran from 2007 to 2012.

Luis Elizondo, the former director of AATIP, leaked several videos of unidentified aircraft moving in seemingly impossible ways to the press after he resigned.

The new documents show that AATIP was more than just investigating reported UFO encounters. The entire cache of 51 documents, obtained by Vice, can be read here.

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There are several dozen Defense Intelligence Reference Documents, which discuss the viability of various advanced technologs.

Reports on wormholes, stargates, and negative energy are included in this collection.

impracticalities of implementing advanced technologies are stressed in many reports. In the report on invisibility cloaking, the authors write that it is impossible to make a cloaking device that is perfect because it requires materials where the speed of light approaches infinite.

The report authors wrote that cloaking devices that make objects invisible to microwave-based sensors, such as radars and motion detectors, are definitely within reach of the present technology.

Some reports do not shy away from bold proposals for realizing advanced technologies. The authors propose to look for extremely lightweight metals in the center of the Moon that may be 100,000 times lighter than steel.

The authors suggest using thermonuclear explosives to blast a tunnel through the lunar crust and mantle to reach the center of the Moon.

NASA plans to return humans to the Moon for the first time since the Apollo era, with the ultimate goal of establishing a sustainable environment. Nuclear explosions on the Moon would be contrary to this mission.

It's not clear whether these DIRD documents led to long-term investments in advanced technologies. According to Vice, much of AATIP's agenda relied on contract research from a private company.

The company was awarded a $10 million contract for their first year of research for the program, Vice reported.

Three weeks after The Sun obtained more than 1,500 pages of documents related to alleged UFO encounters, another dump of the same type arrives. There was a report on the biological effects of encounters with aliens.

Live Science previously reported that the report listed paralysis, abduction, and unaccounted for pregnancies as reported side effects of alleged UFO encounters.

Vice reporters will be digging into their database of AATIP documents in detail over the coming weeks.

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The article was published by Live Science. The original article can be found here.