What Is an Accretion Disk?

An accretion disk is a prevalent astronomical phenomenon characterized by a spiral shape of dust, gas, and other debris that orbits around a central massive object, such as a black hole or star. The material within the disk travels in …

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What Is an A-Type Star?

An A-Type star is a class of star in the spectrum of stellar classifications that astronomers use to categorize these celestial objects. These stars are characterized by their strong hydrogen absorption lines, which are visible in their spectra, the distinctive …

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