20 Euro Silver Coin - The Beauty of the Universe - Einstein Ring - 2025
### The Beauty of the Universe (2.) - Einstein Ring 20 Euro - 22,42 Gram Silver - Proof - 2nd Issue in the new series "The Beauty of the Universe" - Mintage 30,000 pieces - With Certificate of Authenticity - Delivery in original Box The new series **"The Beauty of the Universe"** from the **Austrian Mint** is dedicated to physical-astronomical phenomena shaped in a unique and extraordinary form. The second release shows an **Einstein ring** and is being issued to mark the **70th anniversary of Albert Einstein's death**. The Einstein ring refers to a very rare phenomenon based on the theory of relativity. According to this theory, light is bent around objects in space and focused like a giant lens. The so-called “gravitational lens effect” is very pronounced in galaxies and galaxy clusters, as these are more massive. The “Einstein ring” is a ring that appears around the center of a galaxy and is the light of a more distant galaxy that would normally remain hidden. The motive of the **uniquely shaped coin** shows an Einstein ring in color as well as the inscription “EINSTEINRING”. The reverse again shows the Einstein ring, which is depicted here as a circular wave. Between the light source and the observer is a cluster of galaxies, which deflects the light by gravity. The sketch is supplemented by the formula ∆∅=4GM/bc², which can be used to calculate the deflection of light. The design also includes the inscription “REPUBLIK ÖSTERREICH”, the year of issue “2025” and the denomination “20 EURO”. In order to depict this physical phenomenon in a simplified, three-dimensional way, the coin has been curved concavely and convexly. The **Einstein Ring euro silver coin** in proof quality is delivered in the original box including a certificate of authenticity.