earth science

Pirx (crater)

Pirx (crater) is a earth 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 Pirx (crater) rather than just read about it. In short: Pirx is a 90 km (55.9 miles) wide impact crater on Pluto's natural satellite Charon, discovered in 2015 by the New Horizons spacecraft as it performed its flyby of Pluto and its system of moons. It is located in at 55.2°N 256.18°E / 55.2; 256.18 (Pirx).

Key takeaways

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

Reference excerpt

Pirx is a 90 km (55.9 miles) wide impact crater on Pluto's natural satellite Charon, discovered in 2015 by the New Horizons spacecraft as it performed its flyby of Pluto and its system of moons. It is located in at 55.2°N 256.18°E / 55.2; 256.18 (Pirx). The crater is located near Charon's north pole. Pirx is named after Pilot Pirx, the main character in a series of short stories by Stanislaw Lem. The name was approved by the International Astronomical Union (IAU) on 11 April 2018.

See also List of geological features on Charon

References

Illustrations

Worked examples

Example 1 — a first encounter with Pirx (crater)

Start with the simplest possible case. Write down what Pirx (crater) claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In earth 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 Pirx (crater) 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 Pirx (crater) 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 Pirx (crater)

In research: Pirx (crater) appears in earth 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 Pirx (crater) 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: Pirx (crater) is common in secondary-school and first-year university syllabi. It links to neighbouring topics Astrogeology stubs, Commemoration of Stanisław Lem, Discoveries by New Horizons, so understanding it makes those chapters shorter.
In everyday life: Look for Pirx (crater) 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 Pirx (crater) in 20 minutes

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

Frequently asked questions

What is Pirx (crater) in simple terms?

Why does Pirx (crater) matter?

Because it connects several earth 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 Pirx (crater)?

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 Pirx (crater).