The term 'Betelgeuse' is often seen in the news in the context of
1
It is a pulsating star which regularly expands and contracts.
2
It is the third brightest star of Orion.
3
It is periodically eclipsed by a companion star.
4
It is the vivid red star known as 'Thiruvathirai' or 'Ardra' in Indian astronomy.