Archiwum zagraniczne East News 2023-05
EN_01561628_0051
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Astronomers celebrated the 33rd anniversary of the launch of NASA's Hubble Space Telescope's launch anniversary by releasing a photo of a nearby star-forming region, NGC 1333, ahead of the big day. The nebula is in the Perseus molecular cloud, located approximately 960 light-years away.
Hubble was deployed into orbit around Earth on 25 April 1990, after its launch a day earlier, by NASA astronauts aboard the Space Shuttle Discovery. To date, the famed instrument has taken approximately 1.6 million observations of nearly 52,000 celestial targets.
Hubble's colourful view of the nebula showcases through its unique capability to obtain images from ultraviolet to near-infrared light, unveils an effervescent cauldron of glowing gasses and pitch-black dust stirred up and blown around by several hundred newly forming stars embedded within the dark cloud. Hubble just scratches the surface because most of the star birthing firestorm is hidden behind clouds of fine dust – essentially soot – that are thicker toward the bottom of the image. The blackness in the image is not empty space, but filled with obscuring dust.
To capture this image, Hubble peered through a veil of dust on the edge of a giant cloud of cold molecular hydrogen – the raw material for fabricating new stars and planets under the relentless pull of gravity. Stellar winds, likely from the bright blue star at the top of the image, are blowing through a curtain of dust. The fine dust scatters the starlight at blue wavelengths.
Lower down in the image, another bright, super-hot star shines through filaments of obscuring dust, looking like the Sun shining through scattered clouds. A diagonal string of fainter accompanying stars looks reddish because dust is filtering starlight, allowing more of the red light to get through.
The bottom of the picture presents a keyhole peek deep into the dark nebula. Hubble captures the reddish glow of ionized hydrogen. The celestial fireworks features several overlapping events, caused by pencil-thin jets shooting out from newly forming stars outside the frame of view. These stars are surrounded by circumstellar disks, which may eventually produce planetary systems, and powerful magnetic fields that direct two parallel beams of hot gas deep into space, like a double lightsaber from Star Wars. They sculpt patterns on the hydrogen cocoon, like laser-light-show tracings. The jets are a star's birth announcement.
This view offers a glimpse of the time when our Sun and planets formed inside such a dusty molecular cloud, 4.6 billion years ago. Our Sun didn't form in isolation but was instead embedded inside a mosh pit of frantic stellar birth, perhaps even more energetic and massive than NGC 1333.
Where: United States
When: 19 Apr 2023
Credit: NASA/ESA/STScI/Cover Images
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2023-04-19
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