Uhuru


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Uhuru

(oo-hoor -oo) (‘Freedom’ in Swahili) The first artificial Earth satellite for X-ray astronomy (SAS–1), launched into a 500 km circular equatorial orbit in December 1970 from the San Marco platform off the coast of Kenya. Two sets of proportional gas counters, each 840 cm2 in area and mounted on opposite sides of the slowly spinning spacecraft, scanned the sky for X-ray sources. Uhuru provided the first detailed X-ray sky map, leading to the 3U catalog of 161 sources, published in 1974. Its most important discoveries were of X-ray binaries (Cen X-3, Her X-1, etc.) and of extended regions of X-ray emission associated with clusters of galaxies. Uhuru operated successfully until July 1971, when its transmitter failed. The 3U catalog is based on the data to that time. Subsequently the star sensors, used to determine the precise attitude of the spacecraft and hence the sky coordinates of each X-ray source, also degraded; surveying recommenced in Dec. 1971, however, after partial transmitter recovery. These later observations, with the aid of a magnetometer attitude solution, continued until Apr. 1973, when the Uhuru battery failed. All the Uhuru observations were finally put together to form the 4U catalog, issued in 1978 and containing 339 X-ray sources.
References in periodicals archive ?
Top on the leaders' agenda is how to tap into the oil and gas potential the country has and the Dongo Kundu project, which both Uhuru and Joho say can employ more people than the Mombasa port has ever done.
Uhuru is backed by Japanese technology investor SoftBank Group Corp, receiving USD4.5 million so far.
This irredeemably flawed theory is being advanced by people who apparently do not have an inkling how deep the union between Uhuru and Mr Ruto runs.
This is an annual event that Uhuru Child hosts in order to raise funds for their projects in Kenya, such as providing a secondary education for young women and expanding upon their sustainable business opportunities there, Fender said.
During New York City's gay pride parade in June, Uhuru members marched under their own banner as gay Africans--a first in the parade's 30-plus-year history.
When Kenyans go to the polls on 27 December, it will be to choose between Uhuru Kenyatta, 41, son of Kenya's founding father Jomo Kenyatta, and Mwai Kibaki, 71, a former vice-president and finance minister.
Jihad Shaheed Uhuru, the author of Wake Up Everybody, published his autobiographical novel for at-risk young, black men.
Last year, Uhuru directed Agriculture CS Mwangi Kiunjuri to relook cane and sugar pricing mechanisms, review importation and taxation and get consensus on the future of state-owned industries.
His sentiments came after Kapseret MP Oscar Sudi accused Uhuru of incompetence and told him to resign.
But he has already told his ruling Kanu party that Uhuru will be the party candidate for the presidential elections due in December this year.
'I never imagined I would ever get anywhere close to a Cabinet Minister, let alone President,' are the words of Donald Omai, a man from Busia county who will go down in history as the first boda boda rider to carry Uhuru Kenyatta on a motorbike.