startalkradio
distant-traveller:

The Helix Nebula from Blanco and Hubble

How did a star create the Helix nebula? The shapes of planetary nebula like the Helix are important because they likely hold clues to how stars like the Sun end their lives. Observations by the orbiting Hubble Space Telescope and the 4-meter Blanco Telescope in Chile, however, have shown the Helix is not really a simple helix. Rather, it incorporates two nearly perpendicular disks as well as arcs, shocks, and even features not well understood. Even so, many strikingly geometric symmetries remain. How a single Sun-like star created such beautiful yet geometric complexity is a topic of research. The Helix Nebula is the nearest planetary nebula to Earth, lies only about 700 light years away toward the constellation of Aquarius, and spans about 3 light-years.

Image credit: C. R. O’Dell, (Vanderbilt) et al. ESA, NOAO, NASA

distant-traveller:

The Helix Nebula from Blanco and Hubble

How did a star create the Helix nebula? The shapes of planetary nebula like the Helix are important because they likely hold clues to how stars like the Sun end their lives. Observations by the orbiting Hubble Space Telescope and the 4-meter Blanco Telescope in Chile, however, have shown the Helix is not really a simple helix. Rather, it incorporates two nearly perpendicular disks as well as arcs, shocks, and even features not well understood. Even so, many strikingly geometric symmetries remain. How a single Sun-like star created such beautiful yet geometric complexity is a topic of research. The Helix Nebula is the nearest planetary nebula to Earth, lies only about 700 light years away toward the constellation of Aquarius, and spans about 3 light-years.

Image credit: C. R. O’Dell, (Vanderbilt) et al. ESA, NOAO, NASA

archatlas

archatlas:

Хогвартса Chernivtsi National University Ukraine Gauss

"If you think that "Hogwarts" does not exist, then you are mistaken. It exists, of course is not the same as in the Harry Potter films and magic was not taught. This unique architectural ensemble came into being through the efforts of Bishop Yevhen Hakman. In 1863 he obtained a permit from the tsisar for the construction of a new spacious residence worthy of the capital of Bukovina.  The design is by one of the best architects of its time Joseph HlavkaComposition of the ensemble is quite complicated, but it’s planning is celebrated . It consists of three monumental buildings: the main, the seminary (together with the Church of Three Saints) and presbytery. Currently, the University is included in the UNESCO World Heritage List.”