What is 558 km hubble?

The Hubble Space Telescope orbits Earth at an altitude of approximately 558 kilometers (about 347 miles). Launched in 1990, it is a powerful space observatory that has provided invaluable insights into astronomy and cosmology by capturing high-resolution images of celestial objects. Its position above the Earth's atmosphere allows it to avoid atmospheric distortion, enabling clearer observations of distant galaxies, stars, and other astronomical phenomena.