Regardless of the type of planetary alignment that occurs, the pseudo science gets all the attention. Doomsayers have predicted that with planet alignments Earth's gravity would be affected and result in massive calamities and catastrophes. These alignments have been accused of having the power to cause earthquakes, biblical level floods, giant tsunamis, volcanic eruptions, rip the planet apart, pull us out of our current orbit and are even interpreted as a sign of the apocalypse.
Even if all the planets were perfectly aligned, their distance from the earth makes their gravitational pull and effect on our tides so slight as to be negligible. The Sun as the most massive celestial body in our solar system and the Moon because it is so close exert a gravitational pull and cause Earth's tides.
From a scientific point of view, planetary alignments are just an astronomical curiosity. On September 8, 2040, the inner planets Mercury, Venus, Earth, Mars, as well as Jupiter and Saturn of the outer planets will cluster together with a crescent moon. For all those living, this will offer an excellent opportunity to see a beautiful show in the sky and learn more about planetary alignments.