In May 1845, the HMS Terror set off in search for the elusive Northwest Passage. It wasn't seen again for 175 years.Wikimedia CommonsThe HMS Terror survived oceanic warfare before she met her end on Sir John Franklin’s doomed expedition. In 1845, seasoned naval commander Sir John Franklin set out to find the Northwest Passage aboard two ships, the HMS Terror and HMS Erebus. The Terror, in particular, was quite an impressive ship.

Hosted by Baroness Marie-Hélène de Rothschild and her husband Guy, this eccentric evening featured otherworldly costumes, bizarre decorations, and allegedly Satanic symbolism. Inspired by René Magritte's 1929 painting The False Mirror, the background of clouds is perhaps less interesting than the invitation's backwards writing. Some believe this to be an example of inversion, the supposedly occult practice of subverting Christian norms in favor of more blasphemous beliefs. Vendome Press The invitation's backside, legibly written in a conventional manner.

The Coal Fire Theory News Direct/YouTubeA coal fire burned in the Titanic’s bunkers for up to three weeks before the ship set sail, allegedly weakening the hull. Another theory claims that a raging fire in the Titanic’s coal bunkers weakened the ship’s hull in the exact place where the iceberg struck, allowing it to do much more damage than it would have otherwise. “Just after survivors made landfall, several people who worked on the ship’s engines cited a coal fire as the cause of the shipwreck,” the Smithsonian Magazine explained.

The children reported eerily similar stories about how a silver disc came out of the sky and landed near their school — then mysterious figures with large dark eyes and small slit mouths got out and spoke to them.In September 1994, the small rural town of Ruwa, Zimbabwe, was forever changed. For several days, people across the region reported seeing mysterious lights in the sky at night, kicking off rumors about UFO activity in the area.

Explore Edinburgh of the Seven Seas on the island of Tristan da Cunha — the most remote human settlement in the world.Traveling through the seemingly endless expanse that is the South Atlantic Ocean — 1,200 miles from the nearest inhabited island and 1,500 from the nearest continental land, South Africa — you’ll eventually come upon the crest of a small volcanic island. Brian Gratwicke/FlickrTristan da Cunha island, home of Edinburgh of the Seven Seas, the most remote settlement on Earth.