facula
Example Sentences
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He considers it indeed "highly probable that the preparatory sign of a new spot is always a small, bright patch of facula."
From A Popular History of Astronomy During the Nineteenth Century Fourth Edition by Agnes M. (Agnes Mary) Clerke
Stellar contamination refers to the influence of the star's own features, such as dark spots and bright faculae, on the measurements of the exoplanet's atmosphere.
From Science Daily ● Sep. 25, 2023
"In addition to the contamination from stellar spots and faculae, we saw a stellar flare, an unpredictable event during which the star looks brighter for several minutes or hours," said Lim.
From Science Daily ● Sep. 25, 2023
What’s more, detailed observations from orbiting solar telescopes have shown that the small faculae pump out more energy per unit surface area than the larger ones already known to disappear along with the sunspots.
From Science Magazine ● May 26, 2011
But the absence of other signs of magnetic activity, such as bright patches of very hot gas known as faculae more than compensates for this effect.
From Science Magazine ● May 26, 2011
Perhaps one of the most interesting and useful pieces of astronomical work which an amateur can perform will consist of a record of the origin and changes of form of the solar spots and faculae.
From Side-Lights on Astronomy and Kindred Fields of Popular Science by Simon Newcomb
