astronomy

NGC 2768

NGC 2768 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 NGC 2768 rather than just read about it. In short: NGC 2768 is a lenticular galaxy in the northern constellation of Ursa Major. It is located at a distance of 65 million light years from Earth.

Key takeaways

NGC 2768 belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect NGC 2768 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of NGC 2768 from memory before moving on to harder problems.

Reference excerpt

NGC 2768 is a lenticular galaxy in the northern constellation of Ursa Major. It is located at a distance of 65 million light years from Earth. NGC 2768 is an example of a Seyfert galaxy, an object with a supermassive black hole at its centre. A dusty structure is encircling the centre of the galaxy, forming a knotted ring around the galaxy's brightly glowing middle. This ring lies perpendicular to the plane of NGC 2768 itself, stretching up and out of the galaxy. The dust in NGC 2768 forms an intricate network of knots and filaments. In the centre of the galaxy are two tiny, S-shaped symmetric jets. These two flows of material travel outwards from the galactic centre along curved paths, and are masked by the tangle of dark dust lanes that spans the body of the galaxy. These jets are a sign of a very active centre, where lies a supermassive black hole. This speeds up and sucks in gas from the nearby space, creating a stream of material swirling inwards towards the black hole known as an accretion disc. This disk throws off material in very energetic outbursts, creating structures like the jets.

Supernova One supernova has been observed in NGC 2768:

SN 2000ds (Type Ib, mag. 17.9) was discovered by Tim Puckett and G. Dowdle on 10 October 2000. It occurred 9".1 west and 32".1 south of the nuclear region.

Gallery

References

This article incorporates text available under the CC BY 3.0 license.

External links Media related to NGC 2768 at Wikimedia Commons NGC 2768 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images

Illustrations

Worked examples

Example 1 — a first encounter with NGC 2768

Start with the simplest possible case. Write down what NGC 2768 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 NGC 2768 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 NGC 2768 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 NGC 2768

In research: NGC 2768 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 NGC 2768 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: NGC 2768 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Lenticular galaxies, Lenticular galaxy stubs, NGC objects, so understanding it makes those chapters shorter.
In everyday life: Look for NGC 2768 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 NGC 2768 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what NGC 2768 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 NGC 2768 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is NGC 2768 in simple terms?

NGC 2768 is a lenticular galaxy in the northern constellation of Ursa Major. It is located at a distance of 65 million light years from Earth.

Why does NGC 2768 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 NGC 2768?

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 NGC 2768.