spaceplasma:

Nine Views

Nine Views (Croatian: Devet pogleda) is an ambiental installation in Zagreb, Croatia which, together with the sculpture Prizemljeno Sunce (The Grounded Sun), makes up a consistent model of solar system.

Prizemljeno Sunce by Ivan Kožarić was first displayed in 1971 by the building of the Croatian National Theatre, and since then changed location a few times. Since 1994 it has been situated in the Bogovićeva Street. It is simply a bronze sphere around 2 metres in diameter.

In 2004, artist Davor Preis had a two-week exhibition in the Josip Račić Exhibition Hall in Margaretska Street in Zagreb, and afterwards he placed 9 models of the planets of the solar system around Zagreb, to complete a model of the entire solar system. The models’ sizes as well as their distances from the Prizemljeno Sunce are all in the same scale as the Prizemljeno Sunce itself.

Preis did this installation with very little or no publicity, so his installation isn’t well known among citizens of Zagreb. On a few occasions individuals or small groups of people, particularly physics students, “discovered” that there was a model of the solar system in Zagreb.One of the earliest efforts to find all of the planets was started in November 2004 on the web forum of the student section of Croatian Physics Society.

The locations of the planets are as follows:

• Mercury - 3 Margaretska Street
• Venus - 3 Ban Josip Jelačić Square
• Earth - 9 Varšavska Street
• Mars - 21 Tkalčićeva Street
• Jupiter - 71 Voćarska Street
• Saturn - 1 Račićeva Street
• Uranus - 9 Siget
• Neptune - Kozari Way
• Pluto - Bologna Alley (underpass) - included in the installation before being demoted to dwarf planet

(via wearethec0sm0s)

jtotheizzoe:

Planet Travel Posters Sets Mars & Venus by Ron Guyatt

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The Project:

Space tourism is still a long ways off, but it’s not hard to imagine that someday, tourists will visit the natural geological landmarks of other worlds much like they tour the Grand Canyon, Mount Everest or Ayers Rock. Each of these great tourist destinations needs a classic retro travel poster to entice visitors. Until the day people settle off world and make their own destinations many of these may be the places that people will want to travel too. I hope that these posters can inspire people to think beyond our world to the limitless possibilities of the Universe.

Posters Available at My Store

I want to go to there. And there. An there.

I propose we add the Geysers of Enceladus and the Great Crater of Mimas to the itinerary.

death-by-lulz:

doctorwho:

God Bless the Cactuses

Doctor Who Series 4: The End of Time

BEST SCENE OF DOCTOR WHO EVER!!

(via quantum-immortal)

(Source: misteroswald, via tardisadventures)

astrodidact:

Planck Time

What is the smallest unit of time you can conceive? A second? A millisecond? Hard to say seeing as how time is relative. Under the right circumstances, hours can fly by and seconds can feel like a lifetime. But unfortunately for physicists, time is not something that can be delt with so philosophically. And since they deal with cosmological forces both infinitesimally large and small, they need units that can objectively measure them. When it comes to dealing with the small, Planck Time is the measurement of choice. Named after German physicist Max Planck, the founder of quantum theory, a unit of Planck time is the time it takes for light to travel, in a vacuum, a single unit of Planck length. Taken together, they part of the larger system of natural units known as Planck units.

Originally proposed in 1899 by German physicist Max Planck, Planck units are physical units of measurement defined exclusively in terms of five universal physical constants. These are the Gravitational constant (G), the Reduced Planck constant (h), the speed of light in a vacuum (c), the Coulomb constant(ke or k), and Boltzmann’s constant (kB, sometimes k). Each of these constants can be associated with at least one fundamental physical theory: c with special relativity, G with general relativity and Newtonian gravity, with quantum mechanics, with electrostatics, and kB with statistical mechanics and thermodynamics. They were invented as a means of simplifying the particular algebraic expressions appearing in theoretical physics, especially in quantum mechanics.

Ultimately, Planck time is derived from the field of mathematical physics known as dimensional analysis, which studies units of measurement and physical constants. The Planck time is the unique combination of the gravitational constant G, the relativity constant c, and the quantum constant h, to produce a constant with units of time. They are often semi-humorously referred to by physicists as “God’s units” because eliminate anthropocentric arbitrariness from the system of units, unlike the meter and second, which exist for purely historical reasons and are not derived from nature. Some challenges to Planck’s Time have been mounted. For example, in 2003 during the analysis of the Hubble Space Telescope Deep Field images, some scientists speculated that where there are space-time fluctuations on the Planck scale, images of extremely distant objects should be blurry. The Hubble images, they claimed, were too sharp for this to be the case. Other scientists disagreed with this assumption however, with some saying the fluctuations would be too small to be observable, others saying that the speculated blurring effect that was expected was off by a very large magnitude. A unit of Planck Time can be expressed (in the third picture).

Read more: http://www.universetoday.com/79418/planck-time/#ixzz2U4Nz4Ov1

(via quantum-immortal)