astronomy

Gliese 422 b

Gliese 422 b 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 Gliese 422 b rather than just read about it. In short: Gliese 422 b is an exoplanet orbiting the red dwarf Gliese 422 (Innes' star). Gliese 422 b was discovered in 2014, and the discovery was confirmed in 2020.

Key takeaways

Gliese 422 b belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Gliese 422 b to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Gliese 422 b from memory before moving on to harder problems.

Reference excerpt

Gliese 422 b is an exoplanet orbiting the red dwarf Gliese 422 (Innes' star). Gliese 422 b was discovered in 2014, and the discovery was confirmed in 2020. It has a minimum mass of about ten times that of Earth. It is located on the inner edge of circumstellar habitable zone (HZ) of Gliese 422, which extends from 0.11 to 0.21 AU. Gliese 422 b's semi-major axis is 0.119 AU and its orbital period is 26.161 Earth days.

References

External links "Planet GJ 422 b". Extrasolar Planets Encyclopaedia. 25 May 2014.

Worked examples

Example 1 — a first encounter with Gliese 422 b

Start with the simplest possible case. Write down what Gliese 422 b 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 Gliese 422 b 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 Gliese 422 b 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 Gliese 422 b

In research: Gliese 422 b 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 Gliese 422 b 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: Gliese 422 b is common in secondary-school and first-year university syllabi. It links to neighbouring topics Exoplanet stubs, Exoplanets detected by radial velocity, Exoplanets discovered in 2014, so understanding it makes those chapters shorter.
In everyday life: Look for Gliese 422 b 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 Gliese 422 b in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Gliese 422 b 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 Gliese 422 b out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Gliese 422 b in simple terms?

Gliese 422 b is an exoplanet orbiting the red dwarf Gliese 422 (Innes' star). Gliese 422 b was discovered in 2014, and the discovery was confirmed in 2020.

Why does Gliese 422 b 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 Gliese 422 b?

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 Gliese 422 b.