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Real World Ready · Layer 1: Authentic Experience
Right now, more than 8,000 satellites orbit the Earth. By the 2030s there may be more than 100,000. Most NZ students have never knowingly seen one. This activity changes that — and opens a question that scientists, governments, and space companies are still working out how to answer.
8,000+
Satellites currently orbiting Earth
70%
Of tracked objects are debris, dead satellites, or rocket fragments
836
Near-collisions recorded in low Earth orbit in 2022
100,000+
Possible satellites in orbit by the 2030s
Watch the videoBefore the observation
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Go outside and countLayer 1: your own sky
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AI as thinking partnerLayer 2 — below
The observation — what to do
1
Choose an evening close to sunset — ideally within 90 minutes of dusk when satellites catch the sunlight and the sky is still dark enough to see them.
2
Find an open space with a clear view of the sky. Away from bright lights if possible. Students face south to maximise the visible sky area.
3
Watch for slow, steady points of light moving across the sky. Unlike aircraft, satellites do not blink. Unlike stars, they move.
4
Count how many you see in ten minutes. Record direction, speed relative to stars, and any other observations. Photograph the sky if possible.
5
Note the date, time, and location. This is real data from a real place. It belongs to the students who collected it.
Preparation video: Watch the Spaceward Bound satellite video before the observation — it gives students the context to know what they are looking for and why the number matters.
youtube.com/watch?v=lEz-n-tWhps
What you are looking for
Satellites vs stars
Stars stay fixed relative to each other and do not blink in a regular pattern. Satellites move steadily across the sky and do not change brightness as aircraft do.
Satellites vs aircraft
Aircraft navigation lights blink and often show red and green alongside white. Satellites show a single steady point of light with no blinking.
Direction and speed
Note which direction the satellite is travelling and how fast it appears to move against the fixed stars. Different orbits produce different apparent speeds.
The twilight window
Satellites are most visible in the 90 minutes after sunset or before sunrise — when they are still in sunlight but the sky is dark enough to show them. Outside this window, most are invisible.
What the data means
Your count is a real observation from a real place at a specific moment. No simulation, no screenshot, and no classroom activity replaces this. That count belongs to you.
For the teacher
The Spaceward Bound video is essential preparation. Students who watch it before the observation arrive outside knowing what to look for — and knowing that the number matters. Without it, a moving point of light is just a curiosity.
Apps such as Heavens-Above or Stellarium can be used after the observation to check what was actually overhead at the time. This lets students verify their count against orbital data — a second-order AI-free check that is worth running before the classroom AI session.
The question this activity opens — what should we do about the number of satellites — has no settled answer. That is not a gap in the resource. It is the point of it. Students leave the observation with a genuine question that experts are still working on. That is Layer 1.
Back in the classroom: AI as thinking partner (Real World Ready Layer 2)
Testing your countTell AI how many satellites you counted, the time, and your location. Ask: "Is that number consistent with what would be visible from New Zealand at that time? What might explain any difference?"
Understanding the debrisAsk AI: "If 70% of objects in low Earth orbit are debris, why is it so difficult to remove them?" Compare the answer against what the Spaceward Bound video described.
The collision riskAsk AI: "What happened when satellites have collided? How far does the debris spread?" Then ask: "What is being done about it?" Note where the answers are confident and where they are not.
For Years 9–13Ask AI: "What would happen to GPS, weather forecasting, and global communications if low Earth orbit became unusable?" Ask AI to be honest about what is known versus what is estimated.
"Next time you're outside at night, see how many satellites you can count — and then think about how many you might see in 10 years, or even 15 years time." Nobody has a complete answer to this yet. That is not a gap in the resource. It is the point of it.
Experience Trace Scale — tracking student thinking
Level 1
I can describe what I observed.
Oral prompt: Tell me one thing you noticed in the sky that you weren't expecting.
Level 2
I can connect my observation to the bigger picture.
Oral prompt: What does your count tell you about how many satellites might be visible across the whole of New Zealand right now?
Level 3
I can say where my observation and AI's answer are different.
Oral prompt: Did AI say anything that didn't match what you actually counted or saw?
Level 4
I can explain why this question doesn't have a settled answer yet.
Oral prompt: What would need to happen before anyone could confidently predict what the sky will look like in 2035?
Level 5
I can say what I want to find out next and why my observation gave me that question.
Oral prompt: What question do you have now that you couldn't have asked before you went outside?
