It isn't called anything because it can never occur. It never has occurred in the past, and never will occur in the future. Even if all the planets were at the same heliocentric longitude relative to the Sun, the tilts of their orbits vary enough from the plane of the ecliptic that they still wouldn't be in line.
Another, more accurate, answer
Think of a very simple alignment of two planets, Earth and Venus. This only occurs a little more than once a century. To add a third planet to this alignment would take many millennia. To have all eight planets aligned would require an infinite amount of time.
Even so, the word for it is syzygy.
Syzygy is a word used to describe three bodies in alignment. - this could be the sun, earth, moon or another planet. If its specifically for planets, the word conjunction is used as when viewed from the earth.
Syzygy , when three or more planets are in alignment .
because its nice to make more room.
Planetary alignment, but this never has and never will happen. There is also another name for it I can't remember it, but it starts with an a and has three Y's in it.
A planetary alignment.
Conjunction is the term when they just appear to be aligned from an observer's point of view.
The 8 planets never have and never will all line up. But when two planets are aligned it is called a syzygy
No. It is when the moon is covered completely by earth's shadow.
There is no name for this because it's so statistically improbable that it'll likely never happen.
It is called planetery alignment.
Never.
it would be the average of all of all the planets .
All the Planets are called Mercury, Venus, Earth, Mars, Saturn, Uranus, Neptune and Pluto.You can also have a easy method remembering planets and this is how it goesMy Very Easy Method Speeds Up Naming Planets.
If you mean all our planets and comets, it's called the Sun. It is called "The Solar System".
It is called the "ecliptic plane"
Technically it CAN'T be aligned with the planets, because the planets' positions change all the time.
Never.
Planets Aligned was created on 2008-09-18.
Never.
The planets are lined straight.
Nothing.
Nothing.
Absolutely nothing
Flashpoint - 2008 Planets Aligned 1-9 is rated/received certificates of: Netherlands:12 USA:TV-14
it would be the average of all of all the planets .
Not all of the planets are held by gravity.
It has never happened, and never will. The center of the galaxy does not lie in the plane of the ecliptic, so all the planets can never line up pointing that way.