science

PHASMA

PHASMA 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 PHASMA rather than just read about it. In short: PHASMA is a radio frequency spectrum monitoring and space-based situational awareness mission developed by the Greek non-profit organisation Libre Space Foundation (LSF) with support of EU and ESA. The mission consists of two identical 3U CubeSats named LAMARR (after Hedy Lamarr) and DIRAC (after Paul Dirac) flying in close proximity of each other.

Key takeaways

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

Reference excerpt

PHASMA is a radio frequency spectrum monitoring and space-based situational awareness mission developed by the Greek non-profit organisation Libre Space Foundation (LSF) with support of EU and ESA. The mission consists of two identical 3U CubeSats named LAMARR (after Hedy Lamarr) and DIRAC (after Paul Dirac) flying in close proximity of each other. They were both launched on the SpaceX Falcon 9 flight Transporter-15 in November 2025. The goals of the mission are to quantify the global use of radio frequency spectrum, to locate sources of interference, to detect possible violations of signal transmission, as well as to monitor signal transmissions from other satellites. Initial reports from 2023 stated that the mission would consist of three CubeSats, but their number was later brought down to two. The mission is supported by ESA's Greek CubeSat In-Orbit Validation programme and the Libre Space Foundation received 2 million euros for its development.

See also List of European Space Agency programmes and missions List of spaceflight launches in October–December 2025 Other ESA missions launching on Falcon 9 Transporter-15: IRIDE EAGLET2 1–8 HydroGNSS GENA-OT MICE-1 AIX-1+

References

Illustrations

Worked examples

Example 1 — a first encounter with PHASMA

Start with the simplest possible case. Write down what PHASMA 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 PHASMA 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 PHASMA 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 PHASMA

In research: PHASMA 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 PHASMA 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: PHASMA is common in secondary-school and first-year university syllabi. It links to neighbouring topics 2025 in spaceflight, CubeSats, European spacecraft stubs, so understanding it makes those chapters shorter.
In everyday life: Look for PHASMA 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 PHASMA in 20 minutes

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

Frequently asked questions

What is PHASMA in simple terms?

Why does PHASMA 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 PHASMA?

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 PHASMA.