science

Hubble (crater)

Hubble (crater) is a 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 Hubble (crater) rather than just read about it. In short: Hubble is a lunar impact crater that lies very near the east-northeastern limb of the Moon. At this location it is viewed almost from the side from Earth, and the visibility of this feature is affected by libration.

Key takeaways

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

Reference excerpt

Hubble is a lunar impact crater that lies very near the east-northeastern limb of the Moon. At this location it is viewed almost from the side from Earth, and the visibility of this feature is affected by libration. It lies to the north of the Mare Marginis and northeast of the crater Cannon. About one crater diameter to the north-northeast is Lyapunov. This formation dates to the Nectarian epoch of the lunar geologic timescale. The rim of this crater is worn and eroded, and it has a somewhat irregular edge in places. The inner wall is wider along the western side, where the rim has a slight outward bulge. The most intact portion of the rim lies along the eastern side, and the inner wall of this face is visible from the Earth. The interior floor has been resurfaced by basaltic lava, giving it a lower albedo than the surrounding terrain. It is, however, not quite as dark as the lunar mare to the south. This surface is relatively level and featureless, with only a few tiny craterlets. It lacks a central peak, but a pair of small craterlets lies near the midpoint. This crater is named after American astronomer Edwin P. Hubble (1889–1953).

Satellite craters By convention, these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Hubble crater.

Illustrations

Worked examples

Example 1 — a first encounter with Hubble (crater)

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

In research: Hubble (crater) appears in 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 Hubble (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: Hubble (crater) is common in secondary-school and first-year university syllabi. It links to neighbouring topics Impact craters on the Moon, LQ13 quadrangle, so understanding it makes those chapters shorter.
In everyday life: Look for Hubble (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 Hubble (crater) in 20 minutes

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

Frequently asked questions

What is Hubble (crater) in simple terms?

Why does Hubble (crater) matter?

Because it connects several 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 Hubble (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 Hubble (crater).