Very little. It is simply a rare astronomical occurrence. It can certainly have no effect on the earth.
No, they are very rarely lined up.
The planets are lined straight.
All the planets in our solar system do not line up with the sun at the same time. This rare event, known as planetary alignment, has not occurred for over 6,000 years and is unlikely to occur again anytime soon due to the unique orbits and positions of the planets.
You have Spring Tides
In astrology, three stars lined up can represent the alignment of three planets or celestial bodies in a particular formation. This alignment can hold specific astrological significance and may suggest a time of heightened energy or influence related to the traits or energies associated with those planets.
It's probably they used to somehow study the planets. Already they supposedly "knew" that the other planets evolved around Earth, so then it would have been easier for them to know that the planets lined up every 26 000 years.
Then the engine will not run
the Mayan calendar predicts this on Dec 22, 2012 - end of times. I predict nothing much will happen.
They are always lined up, but they are sometimes also lined up with the Sun so that all three are in a line. That is called opposition, when the Earth is in the middle, or superior conjunction when the Sun is in the middle. One of each happens about every 2½ years.
No, the alignment of planets in the Milky Way does not have a significant impact on Earth's gravity. The gravitational pull between planets is determined by their masses and distances, not their alignment. Earth's gravity is mainly influenced by the mass of Earth itself.
This has probably never happened for it is impossible. You need to remember that Neptune, Uranus etc are planets which take a long time to make an orbit around our sun. But it could have happened for scientists estimate that the odds are one in 2.87 trillion years.
after metaphase the chromosomes rip or break in the middle after they have lined up in metaphase and start to drift to opposite sides of the nucleus