Astronomers have discovered that an aging red giant star has a closely orbiting stellar companion, which could be causing havoc to the star’s processes. The discovery could help researchers better understand what will happen to Earth and the other solar system planets when the sun transforms into a red giant about five billion years from now.
The red giant in question is π1 Gruis, which scientists affectionately refer to as pi-one-Gru, which is located around 530 light-years from Earth….
