Why are there no stars in space photos?

Why are there no stars in space photos?

Assessment

Interactive Video

Physics, Science, Other

University

Hard

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The video explains why stars are often not visible in space images. It discusses how both human eyes and cameras adjust to bright light, affecting star visibility. The Apollo astronauts experienced this on the moon, where the sun's reflection made stars hard to see. Similarly, cameras on spacecraft use quick shutter speeds for daytime images, missing background stars. However, longer exposures can capture stars. Space agencies often release mosaics of images, which exclude stars to enhance resolution and reduce data transmission needs. This approach is crucial due to limited bandwidth in space.

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2 questions

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1.

OPEN ENDED QUESTION

3 mins • 1 pt

Explain why background stars may not be visible in mosaics of space images.

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2.

OPEN ENDED QUESTION

3 mins • 1 pt

What challenges do spacecraft face in transmitting images back to Earth?

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