The peculiar sighting is just one of several to have been reported over the Russian capital recently.
The popular mobile phone game has been turning up everywhere and has even managed to influence politics.
A painting believed to be the work of Italian painter Raphael has been found in an 18th-century home.
Three British physicists have been awarded a Nobel Prize for their work on strange forms of matter.
A rise in occult and superstitious practices has allegedly brought about a major exorcist shortage.
Thermal footage of a strange object flying over the Bristol Channel in the UK has been uploaded online.
Cryptographers have been attempting to decipher the text's mysterious symbols and diagrams for decades.
Authorities have warned that this invasive species of hornet could decimate local bee populations.
NASA's highly successful spacecraft will soon be getting up close and personal with the gas giant itself.
It now appears as though Mars would have been able to support life for longer than is generally believed.
A prominent German architect once proposed joining Africa and Europe by draining the Mediterranean Sea.
An amateur photographer has taken a picture of what he believes could be the elusive Scottish monster.
A particularly bizarre and valuable museum exhibit has been made available to members of the public.
The 55-year-old, who ended up in court, insisted that he hadn't been attempting to travel through time.
Meteorologists working at a polar weather station have been trapped for weeks by a pack of polar bears.
A Philadelphia woman had been out walking when a large fish suddenly fell out of the sky on top of her.
The mystery of a missing British explorer ship which disappeared in the Arctic in 1845 has been solved.
For the first time, a conversation between two dolphins has been recorded using a special microphone.
Environmental officials have been left perplexed after dozens of grackles appeared to fall ill en masse.
A new campaign has been launched in England in an attempt to track down the elusive 'Humber Monster'.