In space, time is measured differently when compared to Earth time due to the effects of gravity and relativity. Depending on the vantage point of the observer, one hour can range anywhere from 53 minutes to 1 hour and 17 minutes.
The space-time continuum is jumbled up due to the absence of a steady gravitational field in Earth’s orbit. This creates a bit of a paradox for measuring time in space, as space is a realm without a consistent anchor.
Additionally, since space travel is based on concepts of relativity, time is relative to the location and speed of the individual in space. Ultimately, the unique environment of space does not follow Earth’s conventional rules when it comes to measuring time, making it impossible to assign a definitive length to one hour in space.
How quickly does time go in space?
The rate at which time passes in space is the same rate at which it passes here on Earth. This is because the laws of physics are the same everywhere throughout the universe. That said, astronauts and cosmonauts on the International Space Station have reported that time seems to go by faster while they are in space, likely due to the fact that life aboard the station is an intense experience filled with a variety of exciting activities.
In addition, astronauts experience 16 sunrises and sunsets each day, and the lack of clear markers for days of the week may contribute to the impression that time is passing more quickly.