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Badr-1 (Urdu: بدر-۱, meaning Full Moon-A) was the first artificial and the first digital communications satellite launched by Pakistan's national space authority — the SUPARCO — in 1990. [1]
An initiative named Clean Green Pakistan was launched in 2019 by the Government of Pakistan. [26] The idea of the initiative was to hold a competition between cities of Pakistan in cleanliness and greenery. A web portal was launched where citizens can get registered and report their activities to earn points.
This is an accepted version of this page This is the latest accepted revision, reviewed on 13 February 2025. Gas in an atmosphere with certain absorption characteristics This article is about the physical properties of greenhouse gases. For how human activities are adding to greenhouse gases, see Greenhouse gas emissions. Greenhouse gases trap some of the heat that results when sunlight heats ...
At the center of the Universe is a central fire, around which the Earth, Sun, Moon and planets revolve uniformly. The Sun revolves around the central fire once a year, the stars are immobile. The Earth in its motion maintains the same hidden face towards the central fire, hence it is never seen. First known non-geocentric model of the Universe ...
Fire is the rapid oxidation of a material (the fuel) in the exothermic chemical process of combustion, releasing heat, light, and various reaction products. [1] [a] Flames, the most visible portion of the fire, are produced in the combustion reaction when the fuel reaches its ignition point.
Energy flows between space, the atmosphere, and Earth's surface. Most sunlight passes through the atmosphere to heat the Earth's surface, then greenhouse gases absorb most of the heat the Earth radiates in response. Adding to greenhouse gases increases this insulating effect, causing an energy imbalance that heats the planet up.
An example of this is vegetable production on the International Space Station in Earth orbit. [10] By the year 2010, 20 plant growth experiments had been conducted aboard the International Space Station. [1] Several experiments have been focused on how plant growth and distribution compares in micro-gravity, space conditions versus Earth ...
In 2016, the Chinese Government released a white paper detailing its space program. According to the document, one of the research objectives of the program is the search for extraterrestrial life. [167] It is also one of the objectives of the Chinese Five-hundred-meter Aperture Spherical Telescope (FAST) program. [168]