See the New Comet Nishimura Before It Disappears for More Than 400 Years

The universe is delivering a cosmic gift this week--a newly discovered comet will zip by earth to say hey before leaving our planetary neighborhood for more than 400 years. The green comet C/2023 P1, or "Nishimura," is already visible in the predawn sky, but over the weekend it will grow brighter and should be visible...