Iot

Its story

Iota Tucanae is a G-type yellow giant about 304 light-years away in the southern Toucan. With twice the Sun's mass and an eleven-fold radius, it has already left the main sequence and emits faint semi-regular pulses on a 67-day period. It is also an X-ray source, evidence of chromospheric activity at its swollen surface. A star offering a plausible glimpse of the Sun's distant future, some five billion years from now.