Whether you take astrology seriously or not, we all know what star sign we are.

But a recent mathematical calculation by an expert in astrology, followed by a report from NASA, has put that all into question.

Revealing the constellations are no longer in the same place as they were during the Babylonian period around 3,000 years ago, it was suggested the zodiac should have new dates.

This meant people thought their horoscope might not be what they thought it originally was.

But some astrologers have since shut the theories down, and have reassured horoscope fans there is nothing to fear.

Here, we explain it all.

Fears were originally raised in 2011 when astrologist Professor Parke Kunkle calculated an astrological phenomenon.

He suggested the zodiac system was all wrong and that the zodiac should have new dates.

He said the Earth's "wobbly" orbit meant it no longer aligned to the stars in the same way it did during the Babylonian period, 3,000 years ago - when the signs of the zodiac were first drawn up.

His theory went viral - with people worrying about what it meant for them and sparking concerns they had possibility spent years checking the wrong horoscope.

Five years after Kunkle's theory was published, NASA sparked even more concern in January 2016 when it published an information piece based on the same theory.

It revealed how scientists have discovered that today, the sky has shifted since the Babylonian period.

It also explained how the Earth's axis - the North Pole - doesn't point in quite the same direction as it did 3,000 years ago - meaning the constellations are no longer in the same place they were.

As a result, NASA revealed how some would have been born under a sign that was in fact one constellation earlier.

Over the years, astrologers have discovered that stars do appear to move because of the wobble in the rotation of the Earth.

Because of this, over thousands of years, the dates where the sun appears to move in front of each constellation of stars has altered by a few days.

The process is known as 'precession'.

Astrologist's have to include the effects of precession to make sure long term predictions are accurate.

However, experts say the shift has no bearing on the 'tropical zodiac' system - based on seasons and their relationships to the cycles of the sun - which is typically used by western astrologers.

So in a nutshell, the stars don't move, but can appear as though they have over the course of centuries - which lead to Kunkle to calculate that the Zodiac should have new dates.

The suggestion of a 13th constellation has also been dismissed by astrologers.

According to the Babylonians' own ancient stories, there was in fact a 13th constellation - Ophiuchus. However, it is said they consciously chose to ignore it.

From a scientific point of view, NASA explains how the constellations are all different shapes and sizes - meaning the sun spends different lengths of time lined up with each one.

For example, the line from Earth through the sun points to Virgo for 45 days, while only pointing to Scorpius for seven.

However, to make a tidy match with their 12-month calendar, NASA claim the Babylonians ignored the fact the sun actually moves through 13 constellations.

It says they assigned each of those 12 constellations equal amounts of time - despite the sun being aligned with Ophiuchus for about 18 days each year.

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NASA think we may have been reading the wrong star signs and horoscopes for years - Daily Post