Blue Bubble in Carina Acrylic Print

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Sparkling at the centre of this beautiful NASA/ESA Hubble Space Telescope image is a Wolf–Rayet star known as WR 31a, located about 30 000 light-years away in the constellation of Carina (The Keel).

The distinctive blue bubble appearing to encircle WR 31a, and its uncatalogued stellar sidekick, is a Wolf–Rayet nebula — an interstellar cloud of dust, hydrogen, helium and other gases. Created when speedy stellar winds interact with the outer layers of hydrogen ejected by Wolf–Rayet stars, these nebulae are frequently ring-shaped or spherical. The bubble — estimated to have formed around 20 000 years ago — is expanding at a rate of around 220 000 kilometres per hour!

Unfortunately, the lifecycle of a Wolf–Rayet star is only a few hundred thousand years — the blink of an eye in cosmic terms. Despite beginning life with a mass at least 20 times that of the Sun, Wolf–Rayet stars typically lose half their mass in less than 100 000 years. And WR 31a is no except...

At the age of 25 years Juergen Weiss discovered the passion to travel, in order to become acquainted with stranger countries, people and cultures. After yourneys on the African Continent, the Seychelles, Sri Lanka and the Maldives, he continued to go further to the East. Thailand, Malaysia, Indonesia and also Hongkong were his goals. In the mid 90`s, Juergen fulfilled his dream finally, when he traveled for a Backpack-Route to South America. And only one year later, he crossed Central America, from Mexico City to Panama City. After some Spain and Portugal-Journeys and after two Greenland Cruiseships, he traveled several times into the North American Continent, and also to Alaska, where Juergen was already seven times. The winter 2005 he...