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A space-based observatory launched in 1990 for visible light, ultraviolet, and infrared observations.

The largest space telescope designed to conduct infrared astronomy, expected to study the earliest galaxies and exoplanets' atmospheres.

A ground-based optical and infrared telescope located in the Atacama Desert, composed of four individual telescopes that can work together.

The Atacama Large Millimeter/submillimeter Array is an array of radio telescopes in Chile for studying cool cosmic dust and gas.

A space-based X-ray telescope for high-resolution imaging and study of X-ray emissions from hot regions of the Universe.

Twin optical/infrared telescopes located at the Mauna Kea Observatories in Hawaii, each with a 10m primary mirror.

An infrared space telescope launched in 2003 and operated until 2020, part of NASA's Great Observatories.

A space observatory used to study astronomical objects emitting gamma rays, to probe astrophysical and cosmological phenomena.

A large radio telescope located in Puerto Rico known for its 305m fixed spherical reflector, operational from 1963 until its collapse in 2020.

A pair of space probes, Voyager 1 and 2, launched in 1977 to study the outer planets and now continue in their extended mission to explore the boundaries of the heliosphere.

A global network of radio telescopes combined to create a virtual Earth-sized telescope, primarily to study supermassive black holes.

The Panoramic Survey Telescope and Rapid Response System is a wide-field astronomical imaging and surveying system at Haleakalā Observatory, Hawaii.

The Stratospheric Observatory for Infrared Astronomy is an airborne observatory using a modified Boeing 747SP aircraft to carry a 2.5-meter diameter infrared telescope.

The Laser Interferometer Gravitational-Wave Observatory is a ground-based facility designed to detect gravitational waves from cosmic events.