2022年10月14日 · Some of the largest telescopes are serving as Earth's eyes to explore supernovas, galaxies and other distant objects. Here are the ten biggest telescopes in action and in progress today.

This list of the largest optical reflecting telescopes with objective diameters of 3.0 metres (120 in) or greater is sorted by aperture, which is a measure of the light-gathering power and resolution of a reflecting telescope.

2025年1月2日 · Below, we have compiled a list of the twelve largest telescopes in the world. The list includes both operational and planned telescopes, sorted by their effective aperture (light gathering limit of an optical instrument).

2024年7月29日 · The Extremely Large Telescope (ELT) will be the world's largest optical telescope, with a primary mirror that measures 128 feet (39 meters) across.

Upon completion, the Giant Magellan Telescope (GMT) will be the largest optical telescope in the world, producing images of the universe with 10 times the clarity of the Hubble Space Telescope. Slated to become operational by 2029, the GMT will explore the distant universe and look for signs of life outside our planet.

2024年12月9日 · The European Southern Observatory's (ESO) Extremely Large Telescope (ELT) — the world's largest visible- and infrared-light telescope — is currently under development on the Cerro Armazones...

2023年6月29日 · JWST is the biggest orbital telescope in the world with a segmented mirror that has a 6.5-m diameter. It is located at the Lagrange point L2, 1.5 million km from the Earth. JWST was launched in December 2021, which instantly made it the leader among orbiting telescopes after the retired Hubble.

2018年12月24日 · The Gran Telescopio Canarias is the largest optical telescope in the world. The 10.4m mirror is actually an array of 36 hexagonal mirrors. It sits over 7,000 feet above sea level. A recent project allows the GTC to observe the universe’s most unique objects.

2018年1月3日 · The Gran Telescopio Canarias is by far the largest telescope on earth and measures 34 feet (or 409 inches) across! Its home is in the Canary Islands of Spain. The design and development of this telescope took more than 1,000 people from over 100 companies more than a decade to complete.

2022年1月14日 · Known locally as GranTeCan, the world’s largest single-aperture optical telescope is the biggest telescope on earth and lives at the Roque de los Muchachos Observatory in the Canary Islands.