Hubble Celebrates 31st Birthday with Giant star(AG Carinae) on the edge of Destruction

In celebration of the 31st anniversary of the launch of the NASA / ESA Hubble Space Telescope, astronomers have observed the galaxy of a bright star seen in our galaxy in order to capture its beauty.

This giant star(AG Carinae), featured in the latest Hubble Space Telescope anniversary image is waging a war between gravity and radiation to avoid self-destruction. This star, known as war AG Carinae, is surrounded by gas and dust all around – a nebula. The nebula is about five light-years wide, equal to the distance from here to our nearest star, Alpha Centauri.

Huge structures were created several thousand years ago by one or more giant cracks. The outer layers of stars were blown into space, the extruded elements are about 10 times more than the amount of our Sun.

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One of the most widely known and brightest stars to survive and die young These stars are millions of years older than our own Sun’s nearly 10-billion-year lifespan. Stays light-years away. The estimated lifespan of stars is between 5 million and 6 million years.

LBVs have dual personalities. They spend years in semi-quiet peace and then they explode in a petulant explosion, during which their illumination increases – sometimes by orders of different sizes. These behemoths are the ultimate stars, much different than ordinary stars like our Sun. In fact, AG Carinae is estimated to be 70 times larger than our Sun and it glows in the blind light of 1 million suns.

Hubble Celebrates 31st Birthday with Giant star(AG Carinae) on the edge of Destruction
CREDIT:NASA

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Large stimuli such as the formation of characteristic nebulae in this image occurred several times during the lifetime of the LBV. An LBV star only drops the material when it is at risk of self-destruction.

Due to their huge size and ultra-hot temperatures, illuminated blue variables like AG Carinae are in constant battle for stability. It is an arm-wrestling competition between pushing the inside of a star outward and radiating pressure through gravity. The result of this arm-wrestling match is that the stars stretch and contract.

External pressure sometimes wins the battle, and the star expands to such a huge size that it closes its outer layers like a volcanic eruption. This excitement, however, occurs only when the star on the way out separates the on-star element, which contracts with its normal (larger) size, settles down again, and becomes stable again.

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LBV stars are rare: Less than 50 people are known in galaxies in the local clusters of our neighbouring galaxies. These stars spend thousands of years at this stage, in the blink of an eye in cosmic time. For some, the Titanic supernova explosion is expected to end their lives, enriching the universe with heavier elements than iron.

Like many other LBVs, the AG carinae is unstable. It has experienced fewer attacks that are not as strong as the current nebula. Although the AG Carinae is now semi-silent, its streaming radiation and strong stellar air (currents of charged particles) continue to form ancient nebulae, floating complex structures due to slowly flowing gas slam into the outer nebula.

The wind travels at 10 million kilometres per hour, about 10 times faster than the expanding nebula. Over time, the hot air catches the cold expelled material, ploughs into it and pushes the star further away from them. This “snowfall” effect cleared a hole around the star.

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The red element is igniting hydrogen gas, which is ignited by nitrogen gas. The red material scattered in the upper left pinpoints where the air broke through a positive region of the material and flowed into space. the most prominent features, highlighted in blue is a filamentary structure shaped like tadpoles and lopsided bubbles.

These structures are dust particles illuminated by starlight. The most prominent tadpole-shaped features on the left and bottom are the dense dust that is sculpted by stellar winds. Hubble’s keen eye reveals the structure of this delicate face.

The image was taken in visible and ultraviolet light. Hubble is ideally suited for observation in ultraviolet light because the range of this wavelength can only be seen from space.

Hubble Trivia

  1. Launched on April 24, 1990, NASA’s Hubble Space Telescope has made more than 1.5 million observations of about 48,000 celestial objects.
  2. In its 31-year lifetime, the telescope has racked up more than 181,000 orbits around our planet, totaling over 4.5 billion miles.
  3. Hubble observations have produced more than 169 terabytes of data, which are available for present and future generations of researchers.
  4. Astronomers using Hubble data have published more than 18,000 scientific papers, with more than 900 of those papers published in 2020.

The Hubble Space Telescope is a project of international cooperation between NASA and ESA (European Space Agency). NASA’s Goddard Space Flight Center in Greenbelt, Maryland, manages the telescope. The Space Telescope Science Institute (STScI) in Baltimore, Maryland, conducts Hubble science operations. STScI is operated for NASA by the Association of Universities for Research in Astronomy in Washington, D.C.

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