Betelgeuse, Alpha Orionis, is a binary star.

"Using the NASA-NSF-funded ‘Alopeke instrument on the Gemini North telescope, one half of the International Gemini Observatory, partly funded by the U.S. National Science Foundation (NSF) and operated by NSF NOIRLab, astronomers have discovered a companion star in an incredibly tight orbit around Betelgeuse. This discovery answers the millennia-old question of why this famous star experiences a roughly six-year-long periodic change in its brightness, and provides insight into the physical mechanisms behind other variable red supergiants. Credit: International Gemini Observatory/NOIRLab/NSF/AURA Image Processing: M. Zamani (NSF NOIRLab)" (ScitechDaily, After Decades of Searching, Astronomers Finally Spot Betelgeuse’s Elusive Companion Star)

The explanation for the strange changes in the famous red giant Betelgeuse's brightness has been solved. So, Betelgeuse is a binary star. That is the companion star. That star is quite bright, an A or B-type star. And that thing causes interesting theorems. What can we find around the well-known objects if we have new, more sensitive systems? New systems found things like a planetary system near Barnard's star. That means. We should remap also well-known stellar systems to find new interesting objects. 

The breakthrough is the well-known, elusive partner star of Betelgeuse, the giant red star. That means one of the most well-known objects in the universe has a hidden partner. That elusive partner has recently been found. Betelgeuse's brightness has covered that elusive partner under it. And the most modern tools needed to find that elusive star. The elusive partner star's life will not be long. The massive tidal forces of Betelgeuse can destroy that star in under 10000 years. 

"Astronomers have discovered a tightly orbiting companion star to Betelgeuse. This finding explains the star’s six-year brightness cycle and offers new insights into the behavior of other variable red supergiants. Credit: International Gemini Observatory/NOIRLab/NSF/AURA Image Processing: M. Zamani (NSF NOIRLab)" (ScitechDaily, After Decades of Searching, Astronomers Finally Spot Betelgeuse’s Elusive Companion Star)

Stellar spectral classification. 

Maybe Betelgeuse trapped another star in its gravitational field. The Betelgeuse companion star is an A or B-type pre-main-sequence star. That means it was not born at the same time as Betelgeuse. The mass of that companion star is about 1,5 times that of the Sun. That companion star is not a dim object like a red dwarf. Maybe it's far dimmer than Betelgeuse, but it's brighter than the Sun. And that raises the question of what other objects are lurking in the universe?

The thing that makes this finding interesting and important is that. The new equipment gives new data from well-known objects. And that thing means that there are no "certain" things in the research. And that means there can be surprises also from well-known objects. There are many things. That disturbs observations. One of those things is the plasma bubble around our solar system. That very high temperature impact- plasma forms when the solar wind impacts particles from other stars. That plasma can disturb IR systems. And it can close some radio frequencies out from our solar system. 

https://earthsky.org/space/companion-for-betelgeuse-confirmed-famous-binaries/

https://scitechdaily.com/after-decades-of-searching-astronomers-finally-spot-betelgeuses-elusive-companion-star/

https://www.space.com/astronomy/astronomers-crack-1-000-year-old-betelgeuse-mystery-with-1st-ever-sighting-of-secret-companion-photo-video

https://en.wikipedia.org/wiki/Heliosphere

https://en.wikipedia.org/wiki/Stellar_classification

https://thatsthenatureoftime.blogspot.com/