The difference between roll clouds and shelf clouds | Hey Ray
You've certainly seen huge parallel clouds in the sky, but what are they and how do they form?
What are Gravity Waves? | Hey Ray!
Ray C. took a picture just outside of Uniontown, Pennsylvania, where you can see the clouds are lined up in neat rows, sort of like a cornfield.
Is the sun really on fire? | Hey Ray
The sun is often referred to as a ball of fire in the sky, but is it actually on fire?
KDKA meteorologists break down their winter weather forecast
It's been a while since the Pittsburgh area has had a real winter wallop. So are we due?
The "Wagon Wheel Illusion" and what it does to our eyes | Hey Ray!
Have you ever noticed when you see a wheel moving at high speed it looks like it is going backward?
Video shows meteor streaking across Pittsburgh-area sky
People reported seeing a meteor streak across the sky in the Pittsburgh area on Monday night.
The coffee cup on a string experiment | Hey Ray
You've heard of ground coffee, but what about a coffee cup falling to the ground?
Northern lights were on display in Pittsburgh area on Thursday
People in the Pittsburgh area saw the northern lights on Thursday night.
Northern lights could be seen in Pittsburgh area tonight
The northern lights may be visible in Western Pennsylvania on Friday.
The Earth is getting a second, mini-moon, so can I see it? | Hey Ray
You may have heard we're getting a mini-moon soon, but that begs the question...will we be able to see it?
Why can we sometimes see the moon during the day? | Hey Ray
One viewer asks - why can we sometimes see the moon during the day?
Radon and testing for radiation as winter approaches | Hey Ray
As the air gets colder, it's important to test for Radon.
What color is the sun really? Hey Ray
We often perceive the sun to be yellow, but is it actually?
The science of popping popcorn | Hey Ray
We've all put popcorn kernels on the stove or in the microwave, but why and how do they pop?
What makes one stream a creek and another a river? | Hey Ray
Western Pennsylvania has several creeks and rivers in our area, so what is the difference?