Final answer:
An astral voyage is a term often associated with science fiction and describes space travel to celestial bodies, an idea explored in both films like 'Europa Report' and educational space videos. The reality of such travel is limited by current technology and the natural speed limit of the universe, the speed of light.
Step-by-step explanation:
An astral voyage typically refers to travel through space to celestial bodies like planets, moons, or other planetary systems. This concept often crosses into the realm of science fiction, where faster-than-light travel and interstellar adventures are featured themes in movies and literature. In reality, human spaceflight has yet to extend beyond a trip to the Moon such as with the Apollo missions, and robotic interplanetary spacecraft have explored various planets in our solar system. The speed of light is often cited as a natural limit to how fast we can travel, making the idea of reaching other galaxies a massive scientific and engineering challenge, as discussed in classroom settings when considering the plausibility of science fiction scenarios.
The 2013 film 'Europa Report' is an example of a science fiction work that attempts to portray what an actual mission to Jupiter's moon Europa might entail. The film tries to include good science in its depiction, prompting discussions on the accuracy and realism in the portrayal of such astral voyages. Similarly, educational videos like 'I Need Some Space' and 'Wanderers' combine real NASA photography and models with speculative science fiction to envision what future space travel might look like within our solar system.