science

Human Research Program

Human Research Program is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Human Research Program rather than just read about it. In short: The Human Research Program (HRP) is a NASA program established in October of 2005. The HRP is located in the Johnson Space Center.

Key takeaways

Human Research Program belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Human Research Program to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Human Research Program from memory before moving on to harder problems.

Reference excerpt

The Human Research Program (HRP) is a NASA program established in October of 2005. The HRP is located in the Johnson Space Center. Its main focuses are research and development, specifically for employees of NASA.

Goals The stated goals of the HRP are to provide knowledge and technology in order to mitigate risks to human health and performance. The Human Research Program also aims to educate the public on the challenges of human space flight.

Crew Health and Performance Exploration Analog missions

To evaluate human health and performance factors ahead of future Mars missions, the program conducts Crew Health and Performance Exploration Analog (CHAPEA) missions inside a habitat at the Johnson Space Center. The 1,700 sq ft (160 m2) habitat was 3-D printed from lavacrete.

CHAPEA mission 1 Began June 25, 2023 Ended July 6, 2024 Crew: Anca Selariu, Ross Brockwell, Kelly Haston, Nathan Jones

CHAPEA mission 2 Began October 19, 2025 Crew: Ross Elder, Ellen Ellis, Matthew Montgomery, and James Spicer

Human Research Roadmap The Human Research Roadmap (HRR) is a web-based tool that is used to communicate the content of the Integrated Research Plan (IRP). The IRP is utilized to identify the approach and research activities planned to address risks to human health and performance in space which are assigned to specific elements within the program. This tool is designed to help users search for items such as gaps associated with risks, the tasks associated with a given gap, the cross-integration of a task across multiple gaps or risks, and deliverables associated with a gap or risk.

Evidence Reviews of the accumulated evidence from medical records, space flight operations, and research findings are compiled into evidence reports. This evidence provides the basis for identifying the highest risk to humans in space exploration, which comprises the risk portfolio within the HRP. It also provides the basis for identifying gaps and tasks in the research plan.

Risks The program identifies risks related to the physiological effects of radiation, weightlessness, terrestrial environments as well as unique challenges in medical support, human factors, and behavioral health support. Risks are identified in the Program Requirements Document (PRD) and assigned to an element within HRP to quantify, mitigate, or monitor.

Gaps For each risk, the HRP attempts to identify gaps in knowledge about the risk and the ability to mitigate the risk. The degree of uncertainty in understanding the likelihood, consequence, and/or time frame of a particular risk are the major factors that drive the gaps. Gaps in knowledge or risk mitigation often appear in multiple risks, and many of the specific research tasks address multiple gaps.

Tasks Tasks partially or completely close a gap by better defining a risk or developing mitigation strategies to reduce the risk to an acceptable level. In some cases, a task can address multiple gaps across multiple risks.

Deliverables Each task culminates in a deliverable or otherwise agreed-upon end-product such as recommended standards, flight rules, processes, countermeasures, and new technologies.

References

External links Human Research Project Archived 2022-12-07 at the Wayback Machine website

Illustrations

Human Research Program logo

Worked examples

Example 1 — a first encounter with Human Research Program

Start with the simplest possible case. Write down what Human Research Program claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Human Research Program before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Human Research Program ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Human Research Program

In research: Human Research Program appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Human Research Program in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Human Research Program is common in secondary-school and first-year university syllabi. It links to neighbouring topics Human spaceflight, so understanding it makes those chapters shorter.
In everyday life: Look for Human Research Program outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Human Research Program in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Human Research Program means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Human Research Program out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Human Research Program in simple terms?

The Human Research Program (HRP) is a NASA program established in October of 2005. The HRP is located in the Johnson Space Center.

Why does Human Research Program matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Human Research Program?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Human Research Program.