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.
Planetary Defense is the term that describes how to protect the Earth from asteroid impact. In this video series, we're going to explore a 5 Step Plan to preventing asteroid impact.
No matter how you look at it, asteroid impact is an international issue that requires international coordination. Watch this video to learn what is required for an international disaster response to an asteroid threatening Earth.
We don't know how to prevent an asteroid impact if we don't first find the asteroid. Watch this video to learn how we find asteroids.
If an asteroid is going to impact the Earth, what do we do? In this video, we'll cover the variety of techniques (and various states of readiness) to deflect an asteroid to save the Earth.
How do we know if an asteroid is going to hit Earth? The answer is tracking! Watch this video to learn how tracking asteroids can save the Earth from an asteroid impact.
If we need to deflect an asteroid to save the Earth, we have to characterize it. Watch our video to learn why asteroid characterization is critical to saving the Earth from asteroid impact.
Bill Nye stops by for a tasty episode about globular clusters. Part of a balanced galaxy!
Bruce is at Mt. Wilson to explain how big telescopes, like the 100-inch, can look deep into space.
Bruce is feeling small at Mt. Wilson as he explains how Edwin Hubble helped define our place in space.
What happens when you drop a hammer and a feather on the Moon? Find out in this Random Space Fact featuring special guest, Physics Girl - Dianna Cowen!
Become a member of The Planetary Society and together we will create the future of space exploration.
Help advance robotic and human space exploration, defend our planet, and search for life.