Tomorrow is the 20th anniversary of the launch of the Hubble Telescope. To celebrate 20 years of amazing images and deep-space discovery, we’ve got an all-new Hubble 3D webisode!

Check out the video below for a fascinating tour of the space shuttle simulator with astronaut Mike Massimino (he’s on Twitter!) Find out why NBA players would feel uncomfortable on the shuttle, how astronauts deal with a space bathroom, explore the flight deck, and learn why space is like “an open book exam.”

Want to celebrate the Hubble’s 20th?
Check out Hubble 3D in the Wortham IMAX Theatre. This stunning 3D film reveals the cosmos as never before, allowing viewers of all ages to explore the grandeur of the nebulae and galaxies, the birth and death of stars, and some of the greatest mysteries of our celestial surroundings.

Did you miss the first three webisodes?
Mike explains how difficult it is to get into space suits.
See the largest swimming pool in the world and how the astronauts use it to train for space walks.
Learn about the first mission to repair the Hubble Telescope.