Planets forming around a star. Computer illustration of an inner and outer ring of dust and gas surrounding a young star (bright, centre). New observations using NASA's Spitzer Space Telescope suggest the gap between the small inner disc and larger outer disc is caused by gas giant planets developing between the two discs. The young star is pulling in material from the inner disk of dust and gas. It is thought that the developing planets prevent material from the outer disc from naturally falling in toward the star, thereby creating the gap.
July 24th, 2016
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