Plant diseases can be infectious (transmitted from plant to plant) or noninfectious. Noninfectious diseases are usually referred to as disorders. Common plant disorders are caused by deficiencies in plant nutrients, by waterlogged or polluted soil, and by polluted air.
Such refinements in the images of Betelgeuse's atmosphere has been helping to resolve the mystery of how massive amounts of dust and gas are expelled from red supergiant stars, an important source of enrichment for the interstellar medium.
Betelgeuse is one of the brightest stars in the sky, sitting prominently in the constellation Orion. It is bigger, brighter and more massive than most stars and sits startlingly close by at only 640 light years. slide 1 of 3. Sadly, this article is not about Michael Keaton's lovable yet terrifying anarchist ghost.