Why are some stars bright and others dim

What is a star?A star is any massive self-luminous celestial body of gas that shines by radiation derived from its internal energy sources. Of the tens of billion. . How is a star’s brightness measured?Astronomers define stellar brightness in terms of magnitudes: the apparent magnitude (the perceived and measured brightness of a star) and the abso. . Why do stars tend to form in groups?Stars tend to form in groups because of where star formation occurs. Stars form within a molecular cloud, where protostars begin to take shape in a. . Why do stars evolve?Stellar evolution occurs when a star loses its energy from continuous nuclear fusion reactions, causing instability due to decreasing gas pressure. . [pdf]
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Teesside lighthouse green fuels

Window 2: winning organisationsAbundia Biomass-to-Liquids (A-Jet UK) Based in Teesside, the project is developing a demonstration plant that uses pyrolysis and hydrotreatment tec. . Window 1: winning organisationsAlfanar Energy Ltd (Lighthouse Green Fuels)Based in the Industrial Cluster at Teesside, the project is developing a commercial scale plant that use. . BackgroundThe competition provides grant funding to first-of-a-kind (FOAK) commercial and demonstration-scale projects in the UK at all development stages up. [pdf]
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