Lesson 6 of 6 · Student projects and Earth-data skills
Shared learning: turn student projects and satellite data into lasting skills
8 minute lesson · 3 checks along the way
Your goal for this lessonEvaluate what education partnerships deliver and practice comparing observations without inventing an extra mission.
In this lesson 3 sections · 3 checks
Using archive links & definitions
Follow a linked name to explore its archive card. “Back to your lesson” brings you to the same part of the reading.
Words with a dotted underline open a short definition right here in the lesson.
Read & understand
A partnership can build capability before flight
The National University of Mongolia records participation in APSCO’s student CubeSat competition through project P2025-4975. In March 2026, the university also signed a cooperation memorandum with APSCO covering discussion of joint projects, training and industrial links. These records document educational and institutional work. Neither is treated as proof that a new Mongolian spacecraft was launched.
The value of such work can be assessed through concrete outputs: a documented design, an integrated prototype, test results or students able to explain and reproduce a procedure. Attendance at an event and successful hardware verification are different achievements. A useful course project defines its expected output before it starts, so the team can later compare evidence with the objective.
Check 1 of 3
10 pointsUse the reading above. You can try again without losing points.
Read & understand
Learn from observations already available
A country can develop space-based applications using observations from international missions as well as its own spacecraft. The paired images here were acquired by Landsat 7 in June 2000 and Landsat 8 in June 2018. They show Ulaanbaatar and its surrounding valleys. They are NASA/USGS observations, not pictures from Mazaalai, Temuulel or a newly announced national satellite.
Look for where the built-up pattern changes, then consider what else differs between observations. Sensor characteristics, viewing conditions, season and processing can affect the comparison. A natural-color scene is not automatically a classified land-use map. NASA’s source page also presents derived urban maps; those are separate analytical products, and their categories should not be silently assigned to every visible pixel in these photographs.
Compare the increase with the original area
Original teaching diagram. INVENTED MAPPED AREAS. 40 km² → 60 km². Difference: 20 km². PERCENTAGE INCREASE. 20 ÷ 40 × 100. 50%. Use consistent boundaries and classifications. Area change alone does not explain its causes.
Open full-size diagram in a new tab: Compare the increase with the original areaLandsat 7 observed Ulaanbaatar on 8 June 2000. Compare this natural-color scene with the other dated observation, especially the city’s valley margins. This is a NASA/USGS image, not a Mongolian satellite result or a classified urban map.
Look closely
Which differences look like ground change, and which need checks for clouds, sensor or processing effects?
See what to notice
The paired scenes support visual comparison of the urban pattern and surroundings. A measured change estimate requires compatible processing, a consistent boundary and classification checks; the pictures alone do not establish population change or its causes.
Landsat 8 observed Ulaanbaatar on 19 June 2018. Compare this natural-color scene with the other dated observation, especially the city’s valley margins. This is a NASA/USGS image, not a Mongolian satellite result or a classified urban map.
Look closely
Which differences look like ground change, and which need checks for clouds, sensor or processing effects?
See what to notice
The paired scenes support visual comparison of the urban pattern and surroundings. A measured change estimate requires compatible processing, a consistent boundary and classification checks; the pictures alone do not establish population change or its causes.
Check 2 of 3
10 pointsUse the reading above. You can try again without losing points.
Read & understand
Measure change with explicit definitions
For an invented exercise, suppose a consistently mapped built-up area grows from forty to sixty square kilometres. The increase is twenty square kilometres, or fifty percent of the original area. It is not a twenty-percent increase: the denominator matters. Real change analysis also needs a consistent boundary, a clear definition of built-up land and a way to check errors.
Area growth alone does not establish how many people moved, why they moved or whether local services improved. Those questions need additional observations and social information. A student can therefore learn a complete analytical process without launching another satellite: ask a question, select suitable data, document processing, test uncertainty and explain the result’s limits. That capability complements spacecraft engineering and gives a partnership a useful outcome beyond a ceremony or a mission name.
Check 3 of 3
10 pointsUse the reading above. You can try again without losing points.
Put it together
Your lesson progress
Each check connects to a part of the story. Complete all 3 to earn your 25-point lesson bonus.
Explore further · Optional
Go to the source
Explore the evidence behind this lesson. These optional readings and videos open in a new tab.
- Read: National University of Mongolia: Asian CubeSat Competition projectProject P2025-4975 documents student participation in the APSCO initiative. A recorded project period and status field are not launch or completion evidence.
- Read: National University of Mongolia: APSCO cooperation agreementReports the 24 March 2026 memorandum and discussion of projects, training and manufacturing cooperation. The agreement does not establish a newly launched spacecraft.
- Read: NASA: The Urbanization of UlaanbaatarNatural-color Landsat observations date to 8 June 2000 and 19 June 2018. The separately published classified urban maps are different products; this course uses the two natural-color scenes.
- Read: NASA: Landsat data overviewExplains the public long-term observation archive used to investigate environmental change. Data access does not eliminate calibration or interpretation requirements.
- Read: NASA: product realizationCompare the explanation and its assumptions with the worked example in this lesson.