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:

Space Drilling Gets Deep

Bruce gets profound at the field test of the Planetary Deep Drill.

Sand Dunes Far, Far Away...

The Bruce Awakens in this new Star Wars themed episode of Random Space Fact about studying dunes on worlds far, far away! (No spoilers)

Philae and Ants

ESA's Rosetta Philae Lander was tiny compared to the comet it landed on.

Deep Space Communications with Nichelle Nichols!

Nichelle Nichols played Lt. Uhura, Star Trek's most famous communications officer, and now she's here to tell us about how NASA communicates with deep space missions like Voyager 1.

Pluto and Pals featuring Emily Lakdawalla!

Pluto and Charon orbit each other much different than the Earth and Moon. Dr. Bruce Betts and Emily Lakdawalla have this special New Horizons themed Random Space Fact!

New Horizons

After 9 years, New Horizons is getting closer and closer to Pluto! Dr. Bruce Betts has a special RSF about the amazing speed of this spacecraft.

An Asteroid As Big As the Vatican

JAXA's Hayabusa spacecraft takes a sample of Dr. Bruce Betts' property in this week's Random Space Fact! (Roma Edition)

Castor and Pollux...and Ecurb

Meanwhile, back in Rome...Twins are the subject of temples and constellations far off in the distance. Dr. Bruce Betts has this week's Random Space Fact!

Solar Sailing

This very special episode of RSF is here just in time for the LightSail test flight on May 20th. Dr. Bruce Betts and his new friend tell you about the power of light and solar sailing!

How Planets Got Their Names

Planet George? Dr. Bruce Betts has this week's Random Space Fact!

Items 21 - 30 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

The Planetary Fund

Help advance robotic and human space exploration, defend our planet, and search for life.


You are here: