Short-term exposure to microgravity causes space adaptation syndrome, a self-limiting nausea caused by derangement of the vestibular system.
en.wikipedia.org The difficulty associated with living and working in microgravity include spatial disorientation, motion sickness, and vertigo.
en.wikipedia.org His research interests are in combustion, heat and mass transfer, microgravity combustion, micro and meso-scale combustion, ignition and flame propagation, smouldering and transition to flaming combustion.
en.wikipedia.org Accordingly, for astronauts in microgravity, no effort is required to hold objects off the cabin floor; they are weightless.
en.wikipedia.org Their operational areas include upper atmosphere research, microgravity research, astronomy, geophysics, materials science, as well as hypersonic research.
en.wikipedia.org