On May 20th our moon, sun, the earth and the constellation of the Pleiades will align. This video explains it more: [link]
It's interesting to note that ancient civilisations such as the Sumerians, Egyptians, Mayan, and even today's Hopi Indians knew about the Pleiadians.
This is a good video about Hopi prophecy [link]
Many ancient stone structures were in perfect alignment with the constellations such as the Egyptian pyramids, Stonehenge, etc. There is much more to 'human' history than many of us realize.
If you have never seen the History Channel's "Ancient Aliens" series, i would recommend that.
Much has been kept secret, much is hidden from us. We do not know our true history... but we are finally asking questions... we are waking up.