Saturn's rings will 'disappear' this weekend. Here's why this phenomenon happens in cycles / Saturn's rings to 'vanish' this weekend: What to know / Saturn has a whopping 274 moons -- scientists want to know why / Scientists reinvent equations governing formation of snowflakes, raindrops and Saturn's rings / How old are Saturn's rings? Study suggests they could be as old as the planet / How old are Saturn's rings? Study suggests they could be 4.5 billion years old just like the planet / Saturn's rings may be far older than we thought / Saturn's rings could be much older than scientists first thought