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  • YOUTH EMPOWERMENT
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    Artificial satellites
    Artificial satellites can be either unmanned (robotic) or manned. The first artificial satellite to be placed in orbit was the unmanned Sputnik 1, launched October 4, 1957, by the Soviet Union. Since then, thousands have been sent into Earth orbit. Various robotic artificial satellites have also been launched into orbit around Venus, Mars, Jupiter, and Saturn, as well as around the Moon and the asteroid Eros. Spacecraft of this type are used for scientific research and for other purposes, such as communication, weather forecasting, navigation and global positioning, Earth resources management, and military intelligence. Examples of manned satellites include space stations, space shuttle orbiters circling Earth, and Apollo spacecraft in orbit around the Moon or Earth.
    Posted by: AAP Bridge
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  • The solar system’s several billion comets are found mainly in two distinct reservoirs. The more-distant one, called the Oort cloud, is a spherical shell surrounding the solar system at a distance of approximately 50,000 astronomical units (AU)—more than 1,000 times the distance of Pluto’s orbit. The other reservoir, the Kuiper belt, is a thick disk-shaped zone whose main concentration extends 30–50 AU from the Sun, beyond the orbit of Neptune but including a portion of the orbit of Pluto. (One astronomical unit is the average distance from Earth to the Sun—about 150 million km [93 million miles].) Just as asteroids can be regarded as rocky debris left over from the formation of the inner planets, Pluto, its moon Charon, Eris, and the myriad other Kuiper belt objects can be seen as surviving representatives of the icy bodies that accreted to form the cores of Neptune and Uranus.
    By: rupali
    Friday, Jul 23, 2021
    YOUTH EMPOWERMENT
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  • Sun, Moon, and brightest planets
    The Sun, Moon, and brightest planets were visible to the naked eyes of ancient astronomers, and their observations and calculations of the movements of these bodies gave rise to the science of astronomy. Today the amount of information on the motions, properties, and compositions of the planets and smaller bodies has grown to immense proportions, and the range of observational instruments has extended far beyond the solar system to other galaxies and the edge of the known universe. Yet the solar system and its immediate outer boundary still represent the limit of our physical reach, and they remain the core of our theoretical understanding of the cosmos as well. Earth-launched space probes and landers have gathered data on planets, moons, asteroids, and other bodies, and this data has been added to the measurements collected with telescopes and other instruments from below and above Earth’s atmosphere and to the information extracted from meteorites and from Moon rocks returned by astronauts. All this information is scrutinized in attempts to understand in detail the origin and evolution of the solar system—a goal toward which astronomers continue to make great strides.  
    By: rupali
    Friday, Jul 23, 2021
    WATER, ENERGY, AND THE ENVIRONMENT
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  • Solar System
    The Solar System is the gravitationally bound system of the Sun and the objects that orbit it, either directly or indirectly. Of the objects that orbit the Sun directly, the largest are the eight planets, with the remainder being smaller objects, the dwarf planets and small Solar System bodies. Of the objects that orbit the Sun indirectly—the natural satellites—two are larger than the smallest planet, Mercury.   One of Billions. Our solar system is made up of a star, eight planets and countless smaller bodies … Meet Me in the Orion Arm. Our solar system orbits the center of the Milky Way Galaxy at about … A Long Way Round. It takes our solar system about 230 million years to complete one orbit around … Spiraling Through Space. There are three general kinds of galaxies: elliptical, spiral and irregular.
    By: rupali
    Friday, Jul 23, 2021
    CULTURE AND SOCIETY
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  • A coordination compound is composed of one or more complex structural units, each of which has a central atom bound directly to a surrounding set of groups called ligands. The nomenclature of coordination compounds is based on these structural relationships.
    By: Vijaya Super admin
    Wednesday, Jul 21, 2021
    HEALTH AND NUTRITION
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  • Cladodes (also called cladophylls or phylloclades) are shoot systems in which leaves do not develop; rather, the stems become flattened and assume the photosynthetic functions of the plant. In asparagus (Asparagus officinalis; Asparagaceae), the scales found on the asparagus spears are the true leaves. If the thick, fleshy asparagus spears continue to grow, flat, green, leaflike structures called cladodes develop in the axils of the scale leaves. The presence of cladodes in unrelated desert angiosperm families is an excellent example of convergent evolution, or the independent development of the same characteristic in unrelated taxa.
    By: rupali
    Wednesday, Jul 21, 2021
    YOUTH EMPOWERMENT
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  • HEALTH AND NUTRITION
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    Nucleotide
    Nucleotide, any member of a class of organic compounds in which the molecular structure comprises a nitrogen-containing unit (base) linked to a sugar and a phosphate group. The nucleotides are of great importance to living organisms, as they are the building blocks of nucleic acids, the substances that control all hereditary characteristics.
    Posted by: AAP Bridge
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  • Polyploidy
    Genomic analysis also has shown that one of the important mechanisms of evolution is multiplication of chromosome sets, resulting in polyploidy (“many genomes”). In plants and animals, spontaneous doubling of chromosomes can occur. In some plants, the chromosomes of two related species unite via cross-pollination to form a fusion product. This product is sterile because each chromosome needs a pairing partner in order for the plant to be fertile. However, the chromosomes of the fusion product can accidentally double, resulting in a new, fertile species. Wheat is an example of a plant that evolved by this means through a union between wild grasses, but a large proportion of plants went through similar ancestral polyploidization.
    By: rupali
    Wednesday, Jul 21, 2021
    HEALTH AND NUTRITION
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  • The study of disease is called pathology. It involves the determination of the cause (etiology) of the disease, the understanding of the mechanisms of its development (pathogenesis), the structural changes associated with the disease process (morphological changes), and the functional consequences of those changes. Correctly identifying the cause of a disease is necessary to identifying the proper course of treatment.   Ref: http://www.aptimize.com/
    By: rupali
    Monday, Sep 20, 2021
    AGRI-FOOD SYSTEMS
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  • https://aap-qa.apps.venturit.org/pathway/natural-language-or-ordinary-language
    By: rupali
    Tuesday, Jul 20, 2021
    EDUCATION

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  • https://aap-qa.apps.venturit.org/AAPBridge/groups/science/stories/coronaviruses-cov-are-a-large-family-of-viruses-that-cause-illness-ranging-from-the-common-cold
    By: rupali
    Tuesday, Jul 20, 2021
    EDUCATION

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  • Myxomatosis
    Myxomatosis, formally infectious myxomatosis, or myxomatosis cuniculi, a highly fatal infectious viral disease of rabbits. It is characterized by fever, swelling of the mucous membranes, and the presence of nodular skin tumours. The disease exists naturally in populations of certain South American rabbits of the genus Sylvilagus and has been introduced into western Europe and Australia as a means of rabbit population control.
    By: rupali
    Monday, Jul 19, 2021
    CULTURE AND SOCIETY
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