Join Donate

Random Space Fact

You've heard it on Planetary Radio, you've seen it on Twitter, now watch Random Space Fact on YouTube! 

How many stars are in the known universe? What's the oldest spacecraft still in orbit? How massive is Jupiter? Watch our weekly Random Space Fact series to find answers to these kinds of questions.

Are you an educator? Here are some ideas to help you get started with using RSF videos in your classroom. Can't stream YouTube from the classroom? Download all RSF episodes here (2 GB).

Here is a list of all RSF videos including topics so you can search for topics of interest.

Subscribe to our YouTube page:

If Mars Were the Size of a Gladius Sword...

How big is the Sun compared to Mars? Dr. Bruce Betts has this week's Random Space Fact!


All those Asteroids with Amy Mainzer

How many asteroids has NEOWISE discovered? Dr. Bruce Betts has this week's Random Space Fact!


Age of the Universe

Cosmologists think the universe is HOW old? Dr. Bruce Betts has this week's Random Space Fact!


Venus Under Pressure

How high is the atmospheric pressure on Venus? Dr. Bruce Betts has this week's Random Space Fact!


The Red Hue of a Lunar Eclipse

Why isn't the Moon pitch black during a total lunar eclipse? Dr. Bruce Betts has this week's Random Space Fact!


Spacecraft Do-Over

Launching pairs of spacecraft: If at first you don't succeed, tree tree again? Dr. Bruce Betts has this week's Random Space Fact!


Meteor...or Fireball?

What's that hurling toward the Earth?! Dr. Bruce Betts has this week's Random Space Fact!


Spacecraft Dawn's Voyage to Ceres

How is Dawn able to orbit two extraterrestrial worlds? Dr. Bruce Betts has this week's Random Space Fact!


Eros, Asteroid of Love (featuring Robert Picardo)

The Asteroid Eros has love written all over it and Star Trek's Robert Picardo stops by to help Bruce with his acting chops on Random Space Fact with Dr. Bruce Betts!


Moon Rocks with BILL NYE!

A special episode of...Grandpa Space Pants??


Items 31 - 40 of 54  Previous123456Next
astronaut on Phobos
Let's Change the World

Become a member of The Planetary Society and together we will create the future of space exploration.

Join Today

LightSail
LightSail

LightSail 2 will launch aboard the SpaceX Falcon Heavy. Be part of this epic point in space exploration history!

Donate

You are here: