The HST was primarily designed to study distant galaxies, stars, and other cosmic objects, allowing astronomers to explore the universe in unprecedented detail.

The James Webb Space Telescope (JWST) is a separate space telescope with different instruments and capabilities. It is not part of the Hubble Space Telescope.

The Hubble Deep Field (HDF) project was a groundbreaking observation that captured an extremely deep and detailed image of a small region of space, revealing distant galaxies and providing insights into the early universe.

The Hubble Space Telescope Key Project on Galaxies provided evidence for the existence of supermassive black holes at the centers of galaxies by observing the motions of stars and gas near the centers of these galaxies.

The Nancy Grace Roman Space Telescope (RST) is the planned successor to the Hubble Space Telescope, scheduled to launch in the 2030s. It will study dark energy, dark matter, and exoplanets.

The Hubble Space Telescope Europa Plume Search was an observation that detected water vapor plumes erupting from the surface of Jupiter's moon Europa, suggesting the presence of a subsurface ocean.

Servicing Mission 1 (SM1) was the first servicing mission to the Hubble Space Telescope, during which astronauts installed corrective optics to fix the telescope's spherical aberration.

The Hubble Space Telescope Kepler Mission was an observation that discovered thousands of exoplanets, including the first Earth-like planet orbiting a Sun-like star.

Servicing Mission 4 (SM4) was the final servicing mission to the Hubble Space Telescope, during which astronauts installed new instruments and repaired existing ones, extending the telescope's lifespan.

The Hubble Space Telescope Titan Surface Composition Survey was an observation that detected methane in the atmosphere of Saturn's moon Titan, providing evidence for the presence of liquid hydrocarbons on its surface.

The Hubble Space Telescope Primary Mirror (HSTPM) is the main mirror of the telescope, which collects and focuses light from distant objects.

The Hubble Space Telescope Milky Way Center Survey was an observation that provided evidence for the existence of a massive black hole at the center of our galaxy, the Milky Way, by studying the motions of stars near the center.

The Hubble Space Telescope Secondary Mirror (HSTM) is the smaller mirror located behind the primary mirror, which reflects the light to the telescope's instruments.

The Hubble Space Telescope Callisto Surface Composition Survey was an observation that detected organic molecules in the atmosphere of Jupiter's moon Callisto, suggesting the presence of a subsurface ocean.