2. 60 million years ago, an asteroid hit the Earth and killed every T-Rex on Earth. That same day, a star was born. 45 years ago, the singer of the band T Rex, Marc Bolan, wrapped himself around a tree at high speed. That same day, the star born 60 million years ago left the main sequence. Estimate the mass of that star, stating all assumptions you make.

2. 60 million years ago, an asteroid hit the Earth and killed every T-Rex on Earth. That same day, a star was born. 45 years ago, the singer of the band T Rex, Marc Bolan, wrapped himself around a tree at high speed. That same day, the star born 60 million years ago left the main sequence. Estimate the mass of that star, stating all assumptions you make.