The Hubble Space Telescope (HST) is designed to detect faint light from far away. If the HST were pointed at Earth, the image would be a bright blur. This is because:
Brightness: The Earth is too bright and could damage the HST's instruments.
Atmosphere: The HST would have to look through the atmosphere, which would blur the images.
Movement: The HST moves around the Earth at seven kilometers per second, making images blurry. The HST's minimum shutter speed is 0.1 seconds, but it moves 700 meters during that time.
However, military spy satellites can take clear pictures of Earth using the HST.
