International Space Station
International Space Station - Related Videos
05:03
Emergency Eyewash and Shower Stations
0 Views •
2023
Robert M. Rioux, Pennsylvania State University, University Park, PA The Occupational Safety and Health Administration (OSHA) mandates that an emergency eyewash and shower station be easily accessible in all workplaces in which a person could be exposed to injurious and/or corrosive substances. Emergency eyewash and shower stations should be used in the case of a laboratory or workplace accident that involves the spilling of a harmful, possibly corrosive chemical onto the body or the splashing...
07:54
In vitro Synthesis of Native, Fibrous Long Spacing and Segmental Long Spacing Collagen
0 Views •
Cited by 16 •
2012
Simple and reproducible procedures are described for making three structurally distinct collagen assemblies from a common commercially available Type I collagen monomer. Native type, fibrous long spacing or segmental long spacing collagen can be constructed by varying the conditions to which the 300 nm long and 1.4 nm diameter monomer building block is exposed.
09:18
Internal Standards
0 Views •
2023
Source: Laboratory of Dr. B. Jill Venton - University of Virginia The goal of many chemical analyses is a quantitative analysis, where the amount of a substance in a sample is determined. In order to accurately calculate the concentration of an unknown from a sample, careful sample preparation is key. Every time a sample is handled or transferred, some of the sample can be lost. There are strategies however, for minimizing sample loss. There are also strategies for coping with sample loss and...
02:00
Internal Energy
0 Views •
2020
The total of all possible kinds of energy present in a substance is called the internal energy (U), sometimes symbolized as E. Suppose a system with initial internal energy, Uinitial, undergoes a change in energy (transfer of work or heat), and the final internal energy of the system is Ufinal. Change in internal energy equals the difference between Ufinal and Uinitial. Although the values for Ufinal and Uinitial cannot be determined for a system, the first law of thermodynamics only...
01:25
Space Curves
0 Views •
2026
A space curve describes the path followed by a particle moving through three-dimensional space. Unlike plane curves, which are confined to two coordinates, space curves require three coordinate functions. If t is a parameter, the position of the particle is represented by the vector function\begin{equation*}\mathbf{r}(t)=\langle x(t),y(t),z(t)\rangle,\end{equation*}where x(t), y(t), and z(t) are differentiable functions of t. As t varies over an interval, the endpoints of the position vectors...
FAQs
Biological responses on the ISS reflect several altered conditions rather than microgravity alone. Reduced gravitational loading, increased radiation exposure, and a changed day-night cycle can influence cells, microbes, plants, animals, and human physiology in different ways. Studying these factors together helps investigators identify which biological processes shift during spaceflight and which may be relevant to long-duration missions.
Life-support systems are essential experimental controls because they maintain pressure, temperature, air, and water while organisms experience spaceflight conditions. Keeping these environmental requirements stable allows researchers to distinguish responses associated with microgravity, radiation exposure, or altered light cycles from effects caused by unsuitable living conditions. This supports more reliable interpretation of biological changes observed aboard the station.
Earth-based comparisons provide a reference for judging whether a measured change is associated with spaceflight conditions. Investigators can compare processes observed in orbit with corresponding biological observations on Earth, helping separate ordinary variation from responses linked to the ISS environment. This comparison is especially important when examining bone loss, muscle decline, immune responses, microbial growth, or tissue repair.
Investigations examine a defined biological process under ISS conditions and use controlled experiments with regular Earth-based comparisons. Depending on the study, the subject may be cells, microbes, plants, animals, or humans, and the outcome may concern development, growth, physiology, immune response, or repair. This approach connects a specific observation to a broader biological question.
The station supports research across multiple levels of biology. Studies of cells and tissues can address repair, while investigations of microbes focus on growth; plant and animal experiments examine development and physiology; human studies address bone, muscle, and immune responses. Together, these systems show how spaceflight affects living processes from cellular behavior to whole-organism health.
Results from ISS biology research have practical relevance beyond orbit. Findings on bone loss, muscle decline, immune responses, microbial growth, plant development, and tissue repair can clarify fundamental biology and support astronaut health research. They also provide evidence for planning future long-duration missions, when maintaining biological function and interpreting health changes will be especially important.