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Showing posts with the label lack of planets

The smooth material disk around the Vega challenges planet formation theories.

"This two-panel view of the debris disk around Vega shows Hubble's (left) and JWST's (right) views, respectively. Hubble reveals a wide disk of dust, showcasing particles approximately the size of smoke particles, while JWST shows the glow of warm (larger-sized) dust particles distributed throughout the Vega system, with only one small dip in brightness at double the Sun-Neptune distance." (BigThink, JWST compels us to ask: what’s wrong with Vega?) "The 5th brightest star in our night sky is young, blue, and apparently devoid of massive planets. New JWST observations deepen the mystery." (BigThink, JWST compels us to ask: what’s wrong with Vega?) "Prominent in the night sky, Vega is among the brightest stars and happens to be young, close, blue, and still possessing a dusty debris disk around it. Augmenting previous observations by Hubble and ALMA, JWST’s MIRI instrument observed its face-on disk, finding a surprise: it’s smooth and symmetric, with bare