© Münze Österreich AG
© Münze Österreich AG
20 Euros Neutron star
2023 year| Silver (.925) | 22.42 g | 34 mm |
| Issuer | Austria |
|---|---|
| Period | Second Republic (1945-date) |
| Type | Non-circulating coin |
| Year | 2023 |
| Value | 20 Euros 20 EUR = USD 22 |
| Currency | Euro (2002-date) |
| Composition | Silver (.925) |
| Weight | 22.42 g |
| Diameter | 34 mm |
| Shape | Round (irregular, Incuse / relief hemisphere at center) |
| Technique | Milled, Coloured |
| Orientation | Medal alignment ↑↑ |
| Updated | 2024-10-04 |
| Numista | N#365406 |
|---|---|
| Rarity index | 64% |
Reverse
On the coin’s reverse, the neutron star bulges through a coloured imprint and a stylised representation of its magnetic field.
Script: Latin
Lettering: NEUTRONENSTERN
Translation: Neutron star
Designer: Helmut Andexlinger
Edge
Plain
Comment
There are thought to be up to one billion neutron stars in the Milky Way. This figure is obtained by estimating the number of stars that have undergone a supernova explosion, a spectacular explosion of a massive star. Combined with gravitational collapse, this creates a compact and super-dense object known as a neutron star. After black holes, neutron stars are the densest stellar objects in the universe. Even denser than atomic nuclei, which is a good way to think of them, neutron stars are heavier than the Sun itself: a teaspoonful of neutron star would weigh as much as 1,000 Cheops pyramids. Neutron stars can rotate at very high speed – up to 700 revolutions per second – and have a magnetic field 12 to 15 orders of magnitude stronger than that of the Earth, which is a thousand to a million times stronger than the strongest man-made magnetic fields ever produced.Interesting fact
The Neutron Star coin is part of a series of coins issued by the Austrian Mint that celebrate the 100th anniversary of the discovery of black holes. The coin's design features an artist's interpretation of a neutron star, which is a type of celestial object that is formed when a star with a mass similar to that of the sun undergoes a supernova explosion. The coin's unique shape, which resembles a rounded triangle, is meant to represent the intense gravitational pull of a neutron star.
Price
| Date | Mintage | VG | F | VF | XF | AU | UNC |
|---|---|---|---|---|---|---|---|
| 2023 | 30000 | - | - | - | - | - | - |
Values in the table are based on evaluations by sales realized on Internet platforms. They serve as an indication only for 20 Euros (Neutron star) 2023 coin.
