astronomy

Megan Donahue

Megan Donahue 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 Megan Donahue rather than just read about it. In short: Megan Donahue is an American astronomer who studies galaxies and galaxy clusters. She is a professor of physics and astrophysics at Michigan State University, and she was the president of the American Astronomical Society for the 2018–2020 term.

Key takeaways

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

Reference excerpt

Megan Donahue is an American astronomer who studies galaxies and galaxy clusters. She is a professor of physics and astrophysics at Michigan State University, and she was the president of the American Astronomical Society for the 2018–2020 term.

Education and career Donahue graduated in physics from the Massachusetts Institute of Technology in 1985, and completed her PhD in astrophysics from the University of Colorado Boulder in 1990 under the supervision of J. Michael Shull and John T. Stocke. After postdoctoral research at the Carnegie Institution for Science she joined the Space Telescope Science Institute for a second postdoctoral visit in 1993, and stayed on there in other capacities until joining the Michigan State faculty in 2003.

Books She is a co-author of three books in the Pearson Cosmic Perspective Series of astronomy textbooks: The Cosmic Perspective (8th ed., 2016, also published as two separate volumes), The Essential Cosmic Perspective (7th ed., 2014), and The Cosmic Perspective Fundamentals (2nd ed., 2015).

Awards and honors Donahue was the 1993 winner of the Robert J. Trumpler Award for best recent dissertation in astronomy. In 2012 she became a fellow of the American Association for the Advancement of Science, and in 2016 she was elected as a fellow of the American Physical Society.

References

External links Home page Megan Donahue publications indexed by Google Scholar

Illustrations

Worked examples

Example 1 — a first encounter with Megan Donahue

Start with the simplest possible case. Write down what Megan Donahue 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 Megan Donahue 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 Megan Donahue 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 Megan Donahue

In research: Megan Donahue 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 Megan Donahue 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: Megan Donahue is common in secondary-school and first-year university syllabi. It links to neighbouring topics American women astronomers, Fellows of the American Association for the Advancement of Science, Fellows of the American Physical Society, so understanding it makes those chapters shorter.
In everyday life: Look for Megan Donahue 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 Megan Donahue in 20 minutes

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

Frequently asked questions

What is Megan Donahue in simple terms?

Why does Megan Donahue 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 Megan Donahue?

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 Megan Donahue.