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Saturday, 21 August 2021

Friday, 20 August 2021

Shuttle-Centaur

  August 20, 2021      No comments   Edit
Shuttle-Centaur.
Shuttle-Centaur was a version of the Centaur upper stage rocket that could be carried aloft inside the Space Shuttle and used to launch satellites into high Earth orbits or probes into deep space. Two variants were produced: Centaur G-Prime, to launch robotic probes to Jupiter; and Centaur G, for use with US Department of Defense Milstar satellites and the Magellan Venus probe. Its power allowed for heavier deep space probes, prolonging the operational life of the spacecraft. The US Air Force agreed to pay half the cost of Centaur G. The Space Shuttles Challenger and Atlantis were modified to carry the Centaur. After the Challenger accident, NASA concluded it was too risky to fly the Centaur on the Shuttle, just months before its first scheduled flight. The Galileo and Ulysess probes were ultimately launched using the less powerful Inertial Upper Stage. A variant of the Centaur G-Prime was mated with the Titan rocket to produce the Titan IV, which placed 16 military satellites in orbit.

Thursday, 19 August 2021

Orangutan

  August 19, 2021      No comments   Edit
Orangutan.
Orangutans are great apes native to the rainforests of Borneo and Sumatra. Three species in the genus Pongo are recognised. The most arboreal of the great apes, orangutans spend most of their time in trees. They have proportionally long arms and short legs and their hair is reddish-brown. Adult males may develop distinctive cheek pads or flanges and make long calls that attract females and intimidate rivals. Orangutans are generally solitary, with most social bonds occurring between mothers and their dependent offspring. The apes eat mainly fruit, but also vegetation, bark, honey, insects and bird eggs. Among the most intelligent primates, orangutans use a variety of sophisticated tools and construct elaborate sleeping nests each night from branches and foliage. The illegal pet trade, poaching, and habitat destruction for palm oil cultivation have caused severe declines in the populations and ranges of all three species.

Wednesday, 18 August 2021

Gurian Republic

  August 18, 2021      No comments   Edit
Gurian Republic.
The Gurian Republic was an insurrection and protest movement in the western Georgian region of Guria between 1902 and 1906, against the Russian Empire. It arose from a revolt over land grazing rights; taxation, land ownership and economic factors were also concerns. The Republic established its own system of government, although it was not anti-Russian, desiring to remain within the Empire. The 1905 Russian Revolution led to uprisings throughout the Empire, including Georgia, and in reaction the imperial authorities deployed the military to end the rebellions. The peasants were able to fend off a small force of Cossacks, but overwhelming military force was used to re-assert control in 1906. Some of the Republic's leaders were executed, imprisoned or exiled, but others later played prominent roles in the 1918–1921 Democratic Republic of Georgia. The Gurian Republic demonstrated that peasants could participate in the socialist movement, an idea previously downplayed by leading Marxists.
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