The Cosmic Background Explorer (COBE) was launched in 1990 specifically to study the cosmic microwave background radiation, which is the leftover radiation from the Big Bang.

The Planck Surveyor, launched in 2009, was designed to measure the polarization of the cosmic microwave background radiation, which provided valuable information about the early universe and the conditions at the time of the Big Bang.

The Dark Energy Survey, launched in 2013, was a ground-based survey that aimed to study the expansion of the universe and the nature of dark energy. It provided evidence for the accelerating expansion of the universe.

The James Webb Space Telescope, launched in 2018, is a powerful space telescope designed to study the first galaxies and stars that formed in the early universe, providing insights into the conditions at the time of the Big Bang.

The Planck Surveyor, launched in 2011, was a space mission designed to study the properties of dark matter and dark energy, providing insights into the composition of the universe.

The Atacama Large Millimeter Array (ALMA), located in Chile, is a ground-based telescope array that was used to study the cosmic microwave background radiation, providing evidence for the Big Bang Theory.

The Chandra X-ray Observatory, launched in 1997, is a space telescope designed to study the X-ray emission from distant galaxies and clusters of galaxies, providing insights into the large-scale structure of the universe.

The Spitzer Space Telescope, launched in 2003, is a space telescope designed to study the infrared emission from distant galaxies and star-forming regions, providing insights into the early stages of galaxy formation.

The Gaia Mission, launched in 2009, is a space mission designed to study the motion of stars in our galaxy, providing insights into the distribution of dark matter in the Milky Way.

The Kepler Space Telescope, launched in 2009, is a space telescope designed to search for exoplanets, providing insights into the prevalence of planets outside our solar system.

The Laser Interferometer Gravitational-Wave Observatory (LIGO), launched in 2018, is a ground-based observatory designed to study the gravitational waves produced by merging black holes and neutron stars, providing insights into the properties of these objects and the nature of gravity.

The Perseverance Rover, launched in 2021, is a space mission designed to study the composition of the Martian atmosphere and search for signs of life on Mars.

The ExoMars Mission, launched in 2022, is a space mission designed to study the surface of Mars and search for signs of ancient life on the planet.

The Artemis Program, launched in 2022, is a space mission designed to study the surface of the Moon and search for signs of water and other resources.

The Europa Clipper, launched in 2023, is a space mission designed to study the outer planets of our solar system, including Jupiter, Saturn, Uranus, and Neptune.