astronomy

Galaxy 28

Galaxy 28 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 Galaxy 28 rather than just read about it. In short: Galaxy 28 (*geb. IA8) is a communications satellite owned by Intelsat located at 89° West longitude, serving the North America and South America market.

Key takeaways

Galaxy 28 belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Galaxy 28 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Galaxy 28 from memory before moving on to harder problems.

Reference excerpt

Galaxy 28 (*geb. IA8) is a communications satellite owned by Intelsat located at 89° West longitude, serving the North America and South America market. It was built by Space Systems/Loral, as part of its SSL 1300 line = (plus minus start). aka Galaxy 28 was formerly known as Telstar 8 and Intelsat Americas 8. This satellite provides services in the C-band, Ku-band, and Ka-band.

History Telstar 8 was contracted in 1999 by Loral Skynet to Space Systems/Loral. But on 15 July 2003, Loral filed under Chapter 11 of the United States Bankruptcy Code. In conjunction with the filing, Loral Skynet announced the sale of its North American satellite fleet to INTELSAT to help reduce its debt. Loral announced a definitive agreement to sell Telstar 8 to INTELSAT, renaming the satellite Intelsat Americas 8 (IA 8). INTELSAT changed the name of the Intelsat Americas 8 satellite to Galaxy 28 effective to 1 February 2007.

Satellite description Intelsat Americas 8 (also known as IA 8) is an American (Bermuda registered) geostationary satellite that was launched by a Zenit-3SL launch vehicle from Odyssey, the platform floating on the equatorial Pacific Ocean at 154° West longitude, at 14:03:00 UTC on 23 June 2005. The 5,493 kg (12,110 lb), 16 kW satellite carries 28 C-band, 36 Ku-band, and 24 Ka-band transponders to provide video and data transmissions to all countries in North and South Americas, after parking over 89° West longitude. It was the 28th satellite in the INTELSAT fleet.

Clients Current clients for Galaxy 28 include HughesNet, Hearst Corporation, Mobile Universe, ABC, and CBS.

References

External links Galaxy 28 Ku-band NACC Beam footprint(s) at SatBeams Galaxy 28 Ku-band SAM Beam footprint(s) at SatBeams Galaxy 28 C-band NACC Beam footprint(s) at SatBeams Galaxy 28 C-band SAM Beam footprint(s) at SatBeams

Worked examples

Example 1 — a first encounter with Galaxy 28

Start with the simplest possible case. Write down what Galaxy 28 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 Galaxy 28 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 Galaxy 28 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 Galaxy 28

In research: Galaxy 28 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 Galaxy 28 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: Galaxy 28 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Communications satellites in geostationary orbit, Intelsat satellites, Satellite television, so understanding it makes those chapters shorter.
In everyday life: Look for Galaxy 28 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 Galaxy 28 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Galaxy 28 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 Galaxy 28 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Galaxy 28 in simple terms?

Galaxy 28 (*geb. IA8) is a communications satellite owned by Intelsat located at 89° West longitude, serving the North America and South America market.

Why does Galaxy 28 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 Galaxy 28?

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 Galaxy 28.