astronomy

Ophion (star cluster)

Ophion (star cluster) 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 Ophion (star cluster) rather than just read about it. In short: Ophion is a star cluster in the constellation Ophiuchus. The cluster consists of over 1,000 stars at around 20 million years of age.

Key takeaways

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

Reference excerpt

Ophion is a star cluster in the constellation Ophiuchus. The cluster consists of over 1,000 stars at around 20 million years of age. Ophion is located around 650 lightyears from Earth. The cluster is separating quickly for a star cluster, in a process known as velocity dispersion. As measured by Gaia, the velocity dispersion is 72,000 kilometres per hour (45,000 mph). The pace of diversion was likely aided by a supernova along with galactic tides, the most common source of dispersion in star clusters. Ophion was discovered by Dylan Huson of Western Washington University using data from Gaia DR3.

References

Worked examples

Example 1 — a first encounter with Ophion (star cluster)

Start with the simplest possible case. Write down what Ophion (star cluster) 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 Ophion (star cluster) 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 Ophion (star cluster) 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 Ophion (star cluster)

In research: Ophion (star cluster) 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 Ophion (star cluster) 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: Ophion (star cluster) is common in secondary-school and first-year university syllabi. It links to neighbouring topics Ophiuchus, Star cluster stubs, Star clusters, so understanding it makes those chapters shorter.
In everyday life: Look for Ophion (star cluster) 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 Ophion (star cluster) in 20 minutes

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

Frequently asked questions

What is Ophion (star cluster) in simple terms?

Ophion is a star cluster in the constellation Ophiuchus. The cluster consists of over 1,000 stars at around 20 million years of age.

Why does Ophion (star cluster) 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 Ophion (star cluster)?

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 Ophion (star cluster).