Why So Sirius?

Sirius A and B form a binary star system 8.6 light-years away, making it the brightest star system visible from Earth.

Sirius A is a main-sequence A-type star, about twice the mass of the Sun and 25 times more luminous.

Sirius B, a white dwarf, was once a massive star but exhausted its fuel and collapsed, now having about the Sun’s mass but compressed into Earth’s size.

The two orbit each other every 50.1 years, with Sirius B's intense gravity (400,000 times Earth's) causing gravitational redshift in its light.

This system provides key insights into stellar evolution and white dwarf physics.