YouTube - Planet X Video - Planet X Nibiru The term "Nibiru" (Planet X) comes from ancient Sumerian cuneiform tablets and writings dating 5,000 years old which, many of which can be found at the British Museum. Some tablets over 4000 years old clearly depict a large sun with smaller planets circiling it, a scientific fact not known about by modern science until just 500 years ago. How did the ancients posses such detailed astronomical knowledge without the aid of telescopes or rockets? in Public bookmarkswith sciencevsreligionvideo