The virtual reality experience is safe and enjoyable, but can be uncomfortable for some people. It is not recommended for people with claustrophobia, heart problems, a history of seizures or epilepsy and/or sensitivity to flashing lights or 3D. One of the installations uses strobe lights. People who are prone to motion sickness are also more likely to experience discomfort when using a virtual reality headset. Similar to the symptoms sometimes experienced when stepping off a cruise ship, vertigo may persist and increase within a few hours of use. Symptoms may also include drowsiness. These symptoms may increase the risk of injury when undertaking normal activities in the real world. For those who experience motion sickness or vertigo, we have a few options: We have the option for the experience to be done with the use of a tablet and augmented reality technology. This will let visitors share the same experience alongside their friends and family, and see what they're seeing. We've also created an edited seated documentary version that lasts approximately the same duration as the free-roaming part of the experience. While it's not interactive, it's a 360-degree immersive documentary that lets visitors still experience life aboard the International Space Station.