While the idea of the Earth revolving around the Sun was proposed long before, the person most commonly associated with the announcement of this concept is Nicolaus Copernicus.

Here's why:

* Copernicus published "De Revolutionibus Orbium Coelestium" (On the Revolutions of the Heavenly Spheres) in 1543. This book laid out the heliocentric model of the solar system, with the Sun at the center and the Earth orbiting around it.

* Prior to Copernicus, the dominant model was geocentric, with the Earth at the center. This model, proposed by Ptolemy, was accepted for over 1400 years.

* Copernicus's work was controversial at the time. It challenged the prevailing view and went against the teachings of the Church.

However, it's important to note:

* Ancient Greek philosophers like Aristarchus of Samos proposed the heliocentric model centuries before Copernicus. But their ideas weren't widely accepted or well-documented.

* Copernicus was influenced by earlier astronomers. He built on their work and provided more evidence to support the heliocentric model.

So, while Copernicus wasn't the first to suggest it, his publication of "De Revolutionibus" is considered a pivotal moment in the shift from the geocentric to the heliocentric model, and he is widely credited with announcing this scientific revolution.