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.
The last time all of the planets aligned in a straight line was 561 BC. This phenomenon is known as a grand conjunction, where all the visible planets appear to align along the zodiac during a short period.
The last time that all of the planets aligned in a straight line was in 561 BC. However, it's important to note that a perfect alignment of all the planets is a rare event due to their different orbital planes and speeds.
If you mean all our planets and comets, it's called the Sun. It is called "The Solar System".
It depends on what you mean by "alignment." There have been plenty of times that all the planets have been on more or less the same side of the Sun; there probably has never been a precise alignment (within, say, a few degrees) of all the planets simultaneously.
The planets do not align frequently. A perfect alignment of all planets in our solar system is very rare due to their different orbits and speeds of rotation. The last time all the planets aligned in a straight line was in 561 BC, and such a perfect alignment won't happen again for millions of years.
Never.
Planets Aligned was created on 2008-09-18.
Stonehenge is aligned with the solstices and possibly with some stars, but there is no proven alignment with specific planets. Some researchers have suggested potential astronomical connections with planets like Mars and Venus, but more evidence is needed to confirm these alignments.
The last time all of the planets aligned in a straight line was 561 BC. This phenomenon is known as a grand conjunction, where all the visible planets appear to align along the zodiac during a short period.
The planets are lined straight.
Nothing.
Nothing.
Absolutely nothing
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Yes, it is theoretically possible for all the planets in our solar system to align, but it is extremely rare due to the different orbits and speeds at which they move. The last time all the planets aligned in a straight line was in 561 BC, and the next alignment of all the planets is not expected to occur for several centuries.
No that's what the four outer planets are called.
The last time that all of the planets aligned in a straight line was in 561 BC. However, it's important to note that a perfect alignment of all the planets is a rare event due to their different orbital planes and speeds.