The Hubble Space Telescope was launched into orbit in 1990 and has revolutionized our understanding of the universe.

The Hubble Space Telescope is a reflecting telescope, which means that it uses mirrors to focus light.

The primary mirror of the Hubble Space Telescope is made of gold because gold is a very reflective metal.

The diameter of the Hubble Space Telescope's primary mirror is 2.4 meters.

The Hubble Space Telescope's field of view is 0.1 square degrees, which is about the size of a postage stamp held at arm's length.

The Hubble Space Telescope's angular resolution is 0.1 arcseconds, which is about the size of a human hair seen from a distance of 1 kilometer.

The Hubble Space Telescope's sensitivity is 10^-18 watts per square meter, which is about the brightness of a single candle seen from a distance of 100 kilometers.

The Hubble Space Telescope's wavelength range is ultraviolet to near-infrared, which means that it can see light with wavelengths from 115 nanometers to 2.5 micrometers.

The Hubble Space Telescope's mission is to study the stars and galaxies in our universe.

The Hubble Space Telescope has made many important discoveries, including the age of the universe, the expansion of the universe, the existence of black holes, and the formation of stars and galaxies.

The James Webb Space Telescope is a new space telescope that will replace the Hubble Space Telescope.

The James Webb Space Telescope is a reflecting telescope, which means that it uses mirrors to focus light.

The primary mirror of the James Webb Space Telescope is made of gold because gold is a very reflective metal.

The diameter of the James Webb Space Telescope's primary mirror is 6.5 meters.

The James Webb Space Telescope's field of view is 1 square degree, which is about the size of a postage stamp held at arm's length.