It is a common fact that we see light flashes in a dark environment while living up here, and this experiment is essentially trying to detect how we humans detect these flashes - not sure if these are visual, if they are some type of radiation maybe sensed by some other part of the brain.

There are areas of the Earth that I would absolutely think no one lived in based on daytime observations. But then at night, lights pop up in those areas.

The food containers come in different varieties: for example, drinks, breakfast type food, meats, vegetables. There are about 5-10 days of that type of food in each container. We try not to open a new container until we finish the one we are on - even if that means going without coffee for a couple of days.

Sunita Williams Quotes