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Hace 2 días · The object was first discovered by William Herschel in May of 1786. Globular clusters like NGC 6440 are roughly spherical, tightly packed, collections of old stars bound together by gravity. They can be found throughout galaxies, but often live on the outskirts. They hold hundreds of thousands to millions of stars that are on average about one ...
Hace 3 días · William Herschel la descubrió en 1784. Es parte del Cúmulo de Virgo y es una galaxia LINER. Con un ángulo de 36°, se ve casi de frente desde la Tierra. Este objeto espacial también presenta un...
Hace 4 días · When William Herschel began his comprehensive survey of the sky using large telescopes in 1782, there were 34 known globular clusters. Herschel discovered another 36 and was the first to resolve virtually all of them into stars. He coined the term globular cluster in his Catalogue of a Second Thousand New Nebulae and Clusters of Stars (1789).
Hace 4 días · In 1785, the astronomer William Herschel noted a faint reddish hue in the core region of Andromeda. He believed Andromeda to be the nearest of all the "great nebulae ", and based on the color and magnitude of the nebula , he incorrectly guessed that it was no more than 2,000 times the distance of Sirius , or roughly 18,000 ly (5.5 kpc ).
Hace 3 días · New Delhi: The James Webb Space Telescope has turned its sensitive infrared gaze towards a globular cluster located 28,000 lightyears from the Earth in the constellation of Sagittarius. Globular clusters located in this direction are close to the heart of the galaxy, and have previously been captured by the Hubble Space Telescope, which has imaged NGC 6440 as well.
Hace 1 día · Constant Companions Part One ran in the February 1, 2024 edition and Constant Companions Part Two ran in the March 7, 2024 edition of the Coastal Breeze News. In our final installment of the stars around the North Star, we look ahead to the summer months, where depending on your latitude, the items in these circumpolar constellations are nice ...
Hace 4 días · A newly developed infrared camera featuring high resolution and equipped with a range of lightweight filters has the potential to analyze sunlight reflected from Earth’s upper atmosphere and surface, enhance forest fire alerts, and uncover the molecular composition of other planets.
