We can see Earth from space because the Earth reflects solar radiation that is visible to our eyes.

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BlackTom AI · Accepted Answer

The statement concerns why Earth is visible from space. The core idea is that Earth reflects sunlight, and much of that reflected light is in the visible spectrum, which our eyes can detect.
First, when sunlight hits the Earth, a portion is reflected back into space by clouds, oceans, land, and ice. This reflected light is what makes the planet glow against the darkness of space, especially when viewed from nearby spacecraft or satellites.
Second, the reflectance, or albedo, of Earth determines how bright it appears. Areas with high albedo (like icy regions or cloud tops) reflect more light and stand out, while darker regions reflect less.
Third, the statement does not imply that Earth shines on its own; rather, it becomes visible because it reflects light from the Sun into observers' eyes. Without sunlight or with extreme angles, visibility can be reduced, but the general mechanism is the reflection of visible solar radiation.
Finally, it is worth noting that the Moon is visible at night primarily due to reflected sunlight, illustrating the same principle applied to a natural body in space; Earth is visible from space for the same fundamental reason: reflected solar radiation in the visible range.

CLMT5001 Dynamics PRACTICE QUIZ: Week 2 Lecture 1

We can see Earth from space because the Earth reflects solar radiation that is visible to our eyes.

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