Tsiolkovsky

Friedrich Tsander and Konstantin Tsiolkovsky, two Russian space scientists, first wrote about solar sailing’s possibilities in the 1920s, 40 years after theories were put forth as to how the tails of comets, which generally point away from the sun, actually grow from the pressure of the sun’s light.

Across the Universe 2009

Friedrich Tsander and Konstantin Tsiolkovsky, two Russian space scientists, first wrote about solar sailing’s possibilities in the 1920s, 40 years after theories were put forth as to how the tails of comets, which generally point away from the sun, actually grow from the pressure of the sun’s light.

Across the Universe 2009

Friedrich Tsander and Konstantin Tsiolkovsky, two Russian space scientists, first wrote about solar sailing’s possibilities in the 1920s, 40 years after theories were put forth as to how the tails of comets, which generally point away from the sun, actually grow from the pressure of the sun’s light.

Across the Universe 2009

"Earth is the cradle of the mind," said the pioneering Russian space-flight theorist Konstantin Tsiolkovsky.

A Space in Time 2002

"Earth is the cradle of the mind," said the pioneering Russian space-flight theorist Konstantin Tsiolkovsky.

A Space in Time 2002

Or as Konstantan Tsiolkovsky (IIRC) said, Earth is the cradle of Mankind.

Flip Flopping Road Map from The Planetary Society - NASA Watch 2008

Here, Tsiolkovsky does not look into the distance, a master of all the space he can survey; instead he looks up, humbled by the vastness of the cosmos.

One Hour on Saturday Afternoon Kirsty 2009

Here, Tsiolkovsky does not look into the distance, a master of all the space he can survey; instead he looks up, humbled by the vastness of the cosmos.

Archive 2009-07-01 Kirsty 2009

After doing the barest minimum of research, looking at a few images on Wikipedia and elsewhere, I've concluded that this is a portrait of Tsiolkovsky as a young man.

One Hour on Saturday Afternoon Kirsty 2009

Along with Tsiolkovsky and Oberth, Goddard is recognized as one of the primary founders of modern rocketry and as having launched an entirely new field of science and engineering.

Goddard, Robert Hutchings 2009