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?
The Fallingwater Train Whistle Mystery | Hey Ray!
We've got a mystery to solve! Why does it seem like you can only hear the train whistle at Fallingwater when it's going to rain?
Why can't planes fly when it's too hot? Meteorologist Ray Petelin explains.
Hey Ray, why is it when it gets too hot, airplanes cannot fly?
Have you ever noticed a difference in humidity in vegetation? It's called "Corn Sweat" | Hey Ray!
If you've ever noticed a difference in humidity from higher vegetation to lower vegetation, it's something known as "corn sweat."
Disappearing art - a magic trick or just science? | Hey Ray!
Using just some markers, water, and plastic bags, we can make art disappear!
That's fast! Even when we're sitting, we're still moving | Hey Ray
Even when you aren't moving, you're still moving through the universe at a pretty incredible rate!
Does opening your windows before a tornado actually help? | Hey Ray!
An old idea says you should open windows before a tornado to equalize the pressure, but does that work?
Fair Weather Cumulus Clouds | Hey Ray!
On beautiful days full of sunshine, sometimes some puffy clouds develop that look like cotton balls.