Austria 20 Euro 2023 'Neutron Star'

2023 Austria 20 Euro coin 'Neutron Star'. Austria has issued the third and last coin in the series 'The Universe'. Apart from black holes Neutron Stars are the densest objects in the universe. They are more massive than the sun and are born during a supernova (an explosion of a giant star). Neutron stars spin very rapidly, sometimes up to 700 times per second. The magnetic field is a thousand to a million times stronger than can be created today! A Neutron Star is depicted on the face of the coin and its name is shown in German (NEUTRONENSTERN). On the reverse is the text KREBSPULSAR (Crab Pulsar) - this is a young neutron star that was already observed 1000 years ago and can be seen with the naked eye. Furthermore, the numbers 1.4 Mo, which refers to the solar mass, and 30rps, the rotation speed per second, are shown. The country name REPUBLIK ÖSTERREICH (Austria) and the value indication of 20 Euro are also displayed. The coin is presented in a beautiful case and is supplied with a certificate of authenticity.