science

Kosmos 1275

Kosmos 1275 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 Kosmos 1275 rather than just read about it. In short: Kosmos 1275 (Russian: Космос 1275 meaning Cosmos 1275) was a part of a 6-satellite Soviet military navigation system, called the Parus series, distributed in orbital planes spaced 30 degrees apart, and launched from the Plesetsk cosmodrome aboard a Cosmos rocket. It is believed to be the first satellite destroyed by untracked Satellite debris.

Key takeaways

Kosmos 1275 belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Kosmos 1275 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Kosmos 1275 from memory before moving on to harder problems.

Reference excerpt

Kosmos 1275 (Russian: Космос 1275 meaning Cosmos 1275) was a part of a 6-satellite Soviet military navigation system, called the Parus series, distributed in orbital planes spaced 30 degrees apart, and launched from the Plesetsk cosmodrome aboard a Cosmos rocket. It is believed to be the first satellite destroyed by untracked Satellite debris. On 4th July 2025, Metop-B had to perform a collision avoidance manoeuvre to avoid Kosmos 1275 debris demonstrating the long term problem of spacecraft debris above an altitude of 600 km. Kosmos 1275 was launched from the Plesetsk Cosmodrome in the Russian SSR on 4 June 1981. On July 24, 1981, at 23.51 GMT, it suddenly ceased operations and broke into more 300 large pieces of debris and many other too small to track. Because it had no propellant on board, it was believed that there was nothing internal that could have led to its break-up. However, it is possible that a battery explosion caused the breakup.

Worked examples

Example 1 — a first encounter with Kosmos 1275

Start with the simplest possible case. Write down what Kosmos 1275 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 Kosmos 1275 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 Kosmos 1275 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 Kosmos 1275

In research: Kosmos 1275 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 Kosmos 1275 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: Kosmos 1275 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Kosmos satellites, Soviet spacecraft stubs, Spacecraft launched in 1981, so understanding it makes those chapters shorter.
In everyday life: Look for Kosmos 1275 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.

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Kosmos 1275 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Kosmos 1275 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 Kosmos 1275 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Kosmos 1275 in simple terms?

Why does Kosmos 1275 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 Kosmos 1275?

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 Kosmos 1275.