The Hubble Space Telescope has discovered an isolated cosmic fossil that may provide new insights into the formation of galaxies.
Tucana Dwarf, about 3 million light years away from Earth Galaxy Located on the edge of the Local Group of galaxies, which includes our own Milky Way, the galaxy is home to old stars that researchers believe may hold traces of the early universe, according to a NASA statement.
“With these pure properties, scientists call the Tucana dwarf the “world’s largest star.” fossilNASA officials It said in a statement New images will be released on August 23rd.
New light from the Tucana Dwarf Galaxy captured by the Hubble Space Telescope captures billions of twinkling lights. Star Against the backdrop of a dark universe, these stars appear to shine brightly in the new image, but they are actually relatively faint due to their age. Scientists call this type of galaxy a dwarf spheroidal galaxy, which refers to small galaxies with low luminosity, very little dust, and old stellar populations.
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“As a dwarf spheroidal galaxy, it is smaller and less luminous than most other galaxies. Dwarf galaxy“It appears fainter because the dust is sparse and the number of stars is skewed towards the older range,” NASA officials said in a statement.
The Tucana Dwarf Galaxy is located about 3.6 million light-years away from the center of mass of the Local Group. milky way and other galaxies. The researchers suggest that the Tucana Dwarf Galaxy may have retreated to this isolated corner of the universe after a close encounter with the larger Andromeda Galaxy about 11 billion years ago. The gravitational forces generated by such an interaction would have propelled the smaller companion galaxy (in this case the Tucana Dwarf Galaxy) even further away, according to the statement.
“Dwarf galaxies can be the early material for larger galaxies, and because old stars exist in such isolated environments, studying them could help us trace the formation of galaxies back to ancient times,” NASA officials said in a statement.
Using its telescope, the Hubble Space Telescope was able to observe the distant Tucana Dwarf Galaxy beyond the Local Group. High-performance camera for investigation and the Wide Field Planetary Camera 2. Studying galactic structure, composition and stellar evolution will help researchers better understand the epoch of reionization when the first stars and galaxies formed billions of years ago.
