Stargazers in the northern hemisphere have the privilege of viewing the comet this week, coming as close as 125 million kilometers to Earth.
Nishimura travels at an astonishing speed of 386,000 km/h, making it a fast-moving spectacle across the night sky.
The comet will be at its closest point to the Sun on September 17, potentially facing destruction due to intense heat.
NASA's Paul Chodas believes there's a chance the comet will survive its passage, offering a dazzling sight to the southern hemisphere by late September.
Nishimura, or C/2023 P1, won't return until 2317, making this a truly 'once in a lifetime' opportunity for observers.
To spot it, you'll need good binoculars and knowledge of where to look, according to Mr. Chodas.
The comet's greenish tail is a result of its higher gas-to-dust ratio, creating a mesmerizing celestial display.