astronomy

Maarja Kruusmaa

Maarja Kruusmaa 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 Maarja Kruusmaa rather than just read about it. In short: Maarja Kruusmaa (maiden name Maarja Sink; born 4 January 1970) is an Estonian computer scientist, professor at Tallinn University of Technology, vice-rector for research and head of the biorobotics center at that university. Her main research area is bio-inspired underwater robotics to imitate the movements of fish and turtles.

Key takeaways

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

Reference excerpt

Maarja Kruusmaa (maiden name Maarja Sink; born 4 January 1970) is an Estonian computer scientist, professor at Tallinn University of Technology, vice-rector for research and head of the biorobotics center at that university. Her main research area is bio-inspired underwater robotics to imitate the movements of fish and turtles.

Life and work Kruusmaa graduated from Tallinn Polytechnic in 1989 (majoring in electronic computing machines and devices) and in 1994 from Tallinn University of Technology, majoring in computers and computer networks. From 1995 to 2002, she was a doctoral student at Chalmers University of Technology in Sweden, where she defended her doctoral thesis in 2002 on "Repeated Path Planning for Mobile Robots in Dynamic Environments." Kruusmaa worked as a senior information technology researcher at Tartu University Institute of Technology in 2004–2009 and was the co-founder and development director of Fits.me from 2009 to 2016. She has been working at Tallinn University of Technology. There she has served as head of the biorobotics center 2008–2016 and professor 2008–2016; research vice-dean of the Faculty of Information Technology 2015–2019; Head of the Biorobotics Center of the Institute of Computer Systems; Professor of the Institute of Computer Systems since 2017; and research vice-rector from 2020. She was elected a member of the Estonian Academy of Sciences in 2016 in the field of technical sciences. She belongs to the department of informatics and technical sciences at the academy and is a member of the board of the academy (since 2019). She is a member of the Estonian Polar Research Commission of the Academy of Sciences and the Council of Estonian Centers of Excellence in Science.

Main research Kruusmaa's main research areas are biorobotics, electroactive materials and devices and their control, underwater robotics and learning algorithms for intelligent robots. According to the Estonian Academy of Sciences,Kruusmaa is developing underwater robots that can make their own decisions. Until now, the biggest test of underwater technology has been how to control the robots, because often neither humans nor machines can communicate with each other in the water in a normal way. Kruusmaa has proposed new movement mechanisms for robots, taking the example of the best underwater navigators in nature - fish. Based on the same source of inspiration, she has developed current-sensitive sensors and actuators that improve the robot's perception of its environment. She is also the co-founder of the technology group fits.me and the startup firm SafeToAct which focuses on innovative solutions in medicine, such as the creation of an artificial kidney. Between 2020 and 2025, Kruusmaa served as a Chief Scientific Advisor to the European Commission.

Personal Kruusmaa is married and has two sons and one daughter. Her mother is the painter Lilia Sink and her father was the flutist and composer Kuldar Sink.

Honors and awards 2012 Order of the White Star, IV Class (2012) 2016 Research Award of the Republic of Estonia (2016) 2017 Friend of Science Journalism Award (2017) 2023 Knight of the French Order of Academic Palms (2023)

References

External links TEDx Tallinn presentation by Kruusmaa (in Estonian)

Illustrations

Worked examples

Example 1 — a first encounter with Maarja Kruusmaa

Start with the simplest possible case. Write down what Maarja Kruusmaa 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 Maarja Kruusmaa 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 Maarja Kruusmaa 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 Maarja Kruusmaa

In research: Maarja Kruusmaa 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 Maarja Kruusmaa 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: Maarja Kruusmaa is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1970 births, 21st-century Estonian scientists, 21st-century Estonian women scientists, so understanding it makes those chapters shorter.
In everyday life: Look for Maarja Kruusmaa 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 Maarja Kruusmaa in 20 minutes

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

Frequently asked questions

What is Maarja Kruusmaa in simple terms?

Why does Maarja Kruusmaa 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 Maarja Kruusmaa?

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 Maarja Kruusmaa.