A 1-km-wide asteroid 1997 NC1 is zooming past Earth this Saturday: Is there a risk of impact and how to watch it live

As asteroid 1997 NC1 speeds past Earth this Saturday, many people are wondering whether our planet is in danger. The close flyby of this massive space rock has attracted global attention, but scientists say there is no reason to panic. Here's what makes this asteroid significant, why it is being closely monitored, whether it poses any impact risk, and how skywatchers can follow the event live.