Satellites

In the context of spaceflight, a satellite is an object that has been intentionally placed into orbit. These objects are called artificial satellites to distinguish them from natural satellites such as Earth's Moon. On 4 October 1957 the Soviet Union launched the world's first artificial satellite, Sputnik 1. Since then, about 8,900 satellites from more than 40 countries have been launched. According to a 2018 estimate, some 5,000 remain in orbit. Of those, about 1,900 were operational, while the rest have exceeded their useful lives and become space debris. Approximately 63% of operational satellites are in low Earth orbit, 6% …

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Publications

ORF · 20 November 2021

DA-ASAT will continue to pose a threat to activities in outer space for years to come, putting satellites and space missions at risk, as well as forcing more collision avoidance maneuvers. Space activities


World Bank Group · 11 November 2021 English

as the Village Saving and Loans Associations satellites (ICR p.47). In addition, as per the ICR, recently


World Bank Group · 10 November 2021 French

• Assurer la production continue des données (satellites et terrain) de


World Bank Group · 10 November 2021 English

de consultants pour la production des comptes satellites de la Santé IDA / 65750 Regional component:


World Bank Group · 10 November 2021 English

This paper estimates an urban carbon dioxide emissions model using satellite-measured carbon dioxide concentrations from 2014 to 2020, for 1,236 cities in 138 countries. The model incorporates the global trend …

employing only direct CO2 observations from satellites. The dependent variable in our model is the


World Bank Group · 9 November 2021 English

This paper examines the relationship between access to markets and land cultivation following Berg et al. (2018) using panel methods. Then, author contextualize these results within the broader recent development …

a simulation of VIIRS data (2014–2018). These satellites measure light at night at different times of


World Bank Group · 9 November 2021 English

This paper focuses on the impact of infrastructure on economic development for the countries around the Lake Chad area, an economically- and socially-integrated area in north-west Africa that has development …

systems do not emit enough light to be captured by satellites, but larger isolated power networks certainly


World Bank Group · 8 November 2021 French

et autres qui étaient visibles sur les images satellites on fait l’objet d’une identification sur place


World Bank Group · 8 November 2021 English

Southern Africa is highly vulnerable to extreme weather, climate, and water-related events. The region is home to approximately 345 million people whose lives and livelihoods are directly affected by the …

Organization for the Exploitation of Meteorological Satellites EWS Early Warning System FEWSNET Food Early Organization for the Exploitation of Meteorological Satellites (EUMETSAT) are the most widely used, by 11 countries the vast range of applications available from satellites, such as EUMETSAT, is still important, in particular


World Bank Group · 5 November 2021 English

Spatial difference-in-differences analysis is used to study the impacts of a large-scale development intervention aimed at improving energy efficiency in Malawi. The estimation strategy takes advantage of the geographical variation …

literature that uses remote-sensing data from satellites to measure economic and energy-related outcomes implementation), we use grid-level data from satellites (which are available annually for the period


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