Fig 2: Variation in brightness of Betelgeuse over the previous 15 years. (IMAGE)

Kavli Institute for the Physics and Mathematics of the Universe

Fig 2: Variation in brightness of Betelgeuse over the previous 15 years.

Caption

Gaps in the data are periods when Betelgeuse is not visible in the night sky each year. The brightness data was collected by the observers of the American Association of Variable Star Observers (AAVSO) and the Solar Mass-Ejection Imager instrument in space. Data from the latter was processed by László Molnár from the Konkoly Observatory of CSFK in Budapest, Hungary.

Credit

L. Molnár, AAVSO, UCSD/SMEI, NASA/STEREO/HI

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Credit: L. Molnár, AAVSO, UCSD/SMEI, NASA/STEREO/HI

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