astronomy

MACS J0647.7+7015

MACS J0647.7+7015 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 MACS J0647.7+7015 rather than just read about it. In short: MACS J0647.7+7015 is a galaxy cluster with a redshift z = 0.592, located at J2000.0 right ascension 06h 47m 42s declination +70° 15′. It lies between the Big Dipper and Little Dipper in the constellation Camelopardalis.

Key takeaways

MACS J0647.7+7015 belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect MACS J0647.7+7015 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of MACS J0647.7+7015 from memory before moving on to harder problems.

Reference excerpt

MACS J0647.7+7015 is a galaxy cluster with a redshift z = 0.592, located at J2000.0 right ascension 06h 47m 42s declination +70° 15′. It lies between the Big Dipper and Little Dipper in the constellation Camelopardalis. It is part of a sample of 12 extreme galaxy clusters at z > 0.5 discovered by the MAssive Cluster Survey (MACS). During 2012 the galaxy cluster was announced as gravitationally lensing the most distant galaxy (MACS0647-JD) then ever imaged (z = 11).

References

External links Media related to MACSJ0647.7+7015 at Wikimedia Commons

Illustrations

Worked examples

Example 1 — a first encounter with MACS J0647.7+7015

Start with the simplest possible case. Write down what MACS J0647.7+7015 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 MACS J0647.7+7015 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 MACS J0647.7+7015 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 MACS J0647.7+7015

In research: MACS J0647.7+7015 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 MACS J0647.7+7015 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: MACS J0647.7+7015 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Camelopardalis, Galaxy cluster stubs, Galaxy clusters, so understanding it makes those chapters shorter.
In everyday life: Look for MACS J0647.7+7015 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 MACS J0647.7+7015 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what MACS J0647.7+7015 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 MACS J0647.7+7015 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is MACS J0647.7+7015 in simple terms?

Why does MACS J0647.7+7015 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 MACS J0647.7+7015?

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 MACS J0647.7+7015.