Home Electromagnetic NASA’s Hubble Just Spotted A Massive Eye Hiding In Space

NASA’s Hubble Just Spotted A Massive Eye Hiding In Space


Located in the southern constellation Libra, the image of NGC 5728 captured by the Hubble Telescope shows a spiral design and a shiny core.

that of NASA The Hubble Space Telescope captured the stunning image of a Seyfert galaxy – the uninspiring NGC 5728 – whose center emits a tremendous amount of light, but the rest of the galaxy is still clearly visible in all its glory and looks like a sort of heavenly. eye. A Seyfert galaxy is characterized by its extremely bright core which emits a huge amount of electromagnetic radiation and also has a supermassive black hole at its center.

Almost 10 percent of all galaxies in the universe are said to belong to the category of Seyfert galaxies, and due to their extremely active radiation activity, they are also one of the most studied subjects in the field. . A Seyfert galaxy looks like a regular spiral galaxy, but it has an active galactic nucleus (AGN) at the center that has unusually high brightness in certain regions of the electromagnetic spectrum. Notably, the Seyfert galaxies belong to the class of active galaxies, which are known to be the brightest source of electromagnetic radiation in the Universe.

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One such galaxy is NGC 5728, which was captured in its stunning cosmic form by the revived Hubble Telescope. It is estimated that the luminosity of a Seyfert galaxy can vary between 10 ^ 8 and 10 ^ 11 solar luminosities, which means that its luminosity is as many times as that of the luminous output of the Sun. The image of NGC 5728 was captured using the Wide Field Camera 3 (WFC3) aboard the Hubble Space Telescope which can capture radiation spanning the ultraviolet spectrum and up to the near infrared band. In fact, WFC3 helped spot one of the first galaxies ever to be seen.

A cosmic spectacle that is half-seen

Active Celestial Eye of the Galactic Core

Interestingly, NGC 5728 could also emit light in the visible spectrum, but scientists say the dust surrounding its extremely active center is preventing visible light from escaping. Interestingly, scientists recently discovered a “ghost galaxy” so devoid of matter – both ordinary matter and dark matter – that it allows the viewer to see through it. In addition, the aforementioned Seyfert galaxy emits radiation in more electromagnetic bands than the UV-visible-infrared region alone, but the Wide Field Camera 3 (WFC3) is not able to image in these regions.

Discovered in 1787 by British astronomer Sir Frederick William Herschel, NGC 5728 is said to have a mass 72 billion times that of the Sun. The galaxy captured in the image above is known to show evidence of star formation, but due to the scarcity of molecular gas around the center, no star formation is observed here. According to recent research, scientists have proposed that star formation in a galaxy stops when it lacks cold gas which acts as fuel for the cosmic process.

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Source: ESA

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