Tag Archives: Hubble

Recently, the Hubble Space Telescope captured a before-and-after image of a star exploding brightly. With the images one year apart, the contrast shows how bright a supernova is, and how that brightness fades over time. What is it? The supernova explosion, designated as SN 2018gv, is found in the spiral galaxy NGC 2525. According to NASA, Hubble began observing the …

NASA and ESA’s Hubble Space Telescope have recently released a breathtaking new image of NGC 2835, a spiral galaxy located 35 million light-years away in the constellation Hydra. This latest photo, part of Hubble’s ongoing observation campaign, reveals intricate details of the galaxy, especially in a newly highlighted wavelength of red light called H-alpha. The stunning pink nebulae scattered across …

Astronomers using the Hubble Space Telescope have discovered that a seemingly ordinary white dwarf star is actually the result of a dramatic stellar merger. This result, detailed in a new study led by Snehalata Sahu and Boris Gaensicke of the University of Warwick in the U.K., suggests that other “normal-looking” white dwarfs scattered throughout the universe could also have violent …

From ground observatories, based on its brightness, the original best estimate for the size of its nucleus was anywhere from 10-20 kilometres in diameter. New data from Hubble has significantly reduced that, putting an upper limit on the comet’s size of 5.6 kilometres wide. That’s still substantially larger than both 2I/Borisov and 1I/’Oumuamua, which were estimated at being roughly 500 …

heic2510 — Science Release 13 August 2025 An international team of astronomers using the NASA/ESA Hubble Space Telescope have discovered a stellar rarity: an ultra-massive white dwarf that formed when a white dwarf merged with another star, rather than through the evolution of a single star. This discovery, which was made possible by Hubble’s sensitive ultraviolet observations, suggests that these …

Astronomers using the Hubble Space Telescope have observed 3I/ATLAS, only the third known object from outside our Solar System to visit our neighborhood. This interstellar interloper is putting on quite a show as it approaches the Sun, revealing secrets about visitors from the depths of space. 3I/ATLAS is clearly active at 3.8 astronomical units as it approaches the Sun, showing …

Recently, the Hubble Space Telescope caught this stunning image of the Tarantula nebula, the largest and brightest stellar factory in the Large Magellanic Cloud  —  a dwarf galaxy orbiting our own. What is it? The Tarantula nebula is home to some of the largest known stars, boasting masses up to 200 times that of our sun. The Hubble Space Telescope …

Quick facts What it is: The Hubble Ultra Deep Field, revisited by the James Webb Space Telescope Where it is: Close to the Big Dipper in the night sky When it was shared: Aug. 1, 2025 The James Webb Space Telescope‘s (JWST) latest extragalactic survey has revealed fainter and more distant objects than ever before, some dating back to the …

NASA has revealed the most detailed images yet taken of comet 3I/ATLAS, the interstellar visitor that is currently barreling its way through our solar system. The images, taken by NASA’s Hubble Space Telescope, have enabled astronomers to more accurately estimate the space object’s size — and it looks like it’s smaller than we thought, NASA said in a statement. 3I/ATLAS …

Thanks to the Hubble Space Telescope, we now have the sharpest image yet of the interstellar visitor 3I/ATLAS, showing that it is clearly a comet, with a coma filled with dust particles and the first hints of a tail. Of course, 3I/ATLAS is no ordinary comet. Discovered on July 1, 2025 by the Asteroid Terrestrial-impact Last Alert System (ATLAS), 3I/ATLAS …