The Tulli Papyrus is an oft-cited document of dubious origins that some believe is an indication of ancient UFOs.
The origins of the document are quire representative of the rest of its history. During a visit to Cairo in 1933, one Alberto Tulli, a director of the Egyptian section of the Vatican museum, supposeduly found an interesting papyrus in an antique shop. The price tag however was too high, and Tulli hastily made a copy of the text, and then yet another replacing the original [[hieratic] script with hieroglyphic. It is this copy of a copy (hieratic original -> hieratic copy -> hieroglyphic copy) that has been translated and widely reproduced. No one besides Mr Tulli has seen the original. The copy is characterized by strange "deletions", where parts of the texts are blacked out in what researches believe may be deliberate attempts to make the content seem more mysterious.
It should be noted that, while the papyrus is supposed to come from the library of Thutmosis III, nothing in the translation refers to any pharaoh by name. It is assumed that Mr Tulli received that information from the shopkeeper.
Mr Tulli's copy has then been translated by a certain Prince Boris de Rachewiltz, who had published several books on Egyptian art. The translation talks about "circles of fire" that flew through the sky on two separate occasions, separated by a few days. It should be noted that while some sources discredit Rachewiltz's credentials, he was a well known scholar at the time, and some of his works are still used today. The quality of his translation is perfectly acceptable; moreover the transcribed Egyptian text that survives stands up to scrutiny and does not appear to be an obvious hoax.
Rachewiltz's translation caused a ruckus, and it has been making the rounds in the UFO literature. However when Vatican was contacted by researches seeking to examine Tulli's copy, it turned out that it has never been a part of Vatican's collection, and remained Tulli's personal property. Upon Tulli's death it was supposedly left to some relative and lost. An additional copy are reported to have been found in an American library, however its origins are shrowded in mistry.
In summary, The Tulli Papyrus is not at all a papyrus, but rather a translation of a modern copy of an Egyptian document no one has seen. Common sense would dictate that no analysis should be made without examining the original for authenticity; however even if that were possible, the 'circles of fire' can be explained by natural phenomena and are, at best, a dubious proof of any kind of extraterrestrial activity.
Rachewiltz's Translation
“… the twenty-second day of the third month of winter, at the sixth hour of the day, the Scribes, the Archivists and the Annalists of the House of Life noticed a ring of fire… . A foul odour came from the mouth, but it had no head. Its body measured one perch by one perch¹ and was silent. And the hearts of the Scribes and the Archivists were terrified and confused and they threw themselves down onto the dust on their stomachs… they then reported the fact to the Pharaoh. His Majesty ordered … it was examined… and he was meditating on what had happened, that it was recorded in the scrolls of the House of Life. Now, after some days had passed, these things became more and more numerous in the sky over Egypt. Their splendour exceeded that of the sun and they came and went freely to the four corners of the sky… . These rings of fire came and went high and wide in the sky. The Pharaoh’s army watched for a long time with the King himself. This happened after dinner. Then these rings of fire ascended even higher into the sky and headed south. Fish and birds then fell from the sky. Never in the memory of man had a great phenomenon been seen on this earth… and the Pharaoh had incense brought to make peace with Earth… and the Pharaoh ordered that what had happened be written and kept in the Annals of the House of Life so that it be remembered for all posterity…”