astronomy

Takao Doi

Takao Doi is a astronomy 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 Takao Doi rather than just read about it. In short: Takao Doi (土井隆雄, Doi Takao; born September 18, 1954) is a Japanese astronaut, engineer and veteran of two NASA Space Shuttle missions. Early life and education Doi holds a doctorate from the University of Tokyo in aerospace engineering, and has studied and published in the fields of propulsion systems and microgravity technology.

Key takeaways

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

Reference excerpt

Takao Doi (土井隆雄, Doi Takao; born September 18, 1954) is a Japanese astronaut, engineer and veteran of two NASA Space Shuttle missions.

Early life and education Doi holds a doctorate from the University of Tokyo in aerospace engineering, and has studied and published in the fields of propulsion systems and microgravity technology. He researched at the Institute of Space and Astronautical Science and was selected by NASDA as an astronaut candidate in 1985 for the Japanese crewed space program while also conducting research in the United States at NASA's Lewis Research Center and the University of Colorado at Boulder. Doi flew as a mission specialist aboard STS-87 in 1997, during which he became the first Japanese astronaut to conduct a spacewalk. He received a Ph.D. in 1983 from the University of Tokyo, and also a PhD in Astronomy from Rice University in 2004. As an avid amateur astronomer, he discovered supernovae SN 2002gw and SN 2007aa.

Astronaut career Takao Doi visited the International Space Station in March 2008 as a member of the STS-123 crew. STS-123 delivered the first module of the Japanese laboratory, Kibō, and the Canadian Dextre robot to the space station. During this mission, he became the first person to throw a boomerang in space that had been specifically designed for use in microgravity during spaceflight.

Post-astronaut career In September 2009, Doi retired from astronaut duty and started working as the chief of Space Applications Section of United Nations Office for Outer Space Affairs. In April 2016, he became a professor at the Unit of Synergetic Studies for Space of Kyoto University and then at the Graduate School of Advanced Integrated Studies in Human Survivability (GSAIS) in April 2020.

References

External links

"DOI Takao biography". JAXA. Retrieved July 25, 2021. Spacefacts biography of Takao Doi

Illustrations

Worked examples

Example 1 — a first encounter with Takao Doi

Start with the simplest possible case. Write down what Takao Doi claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, 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 Takao Doi 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 Takao Doi 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 Takao Doi

In research: Takao Doi appears in astronomy 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 Takao Doi 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: Takao Doi is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1954 births, Discoverers of supernovae, Japanese aerospace engineers, so understanding it makes those chapters shorter.
In everyday life: Look for Takao Doi 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 Takao Doi in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Takao Doi 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 Takao Doi out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Takao Doi in simple terms?

Takao Doi (土井隆雄, Doi Takao; born September 18, 1954) is a Japanese astronaut, engineer and veteran of two NASA Space Shuttle missions. Early life and education Doi holds a doctorate from the University of Tokyo in aerospace engineering, and has studied and published in the fields of propulsion sys…

Why does Takao Doi matter?

Because it connects several astronomy 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 Takao Doi?

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 Takao Doi.