Even under clear skies in areas with little light pollution, this cosmic view is little more than a vague round speck when viewed through binoculars.
But with the newly unveiled Hubble Space Telescope,(opens in new tab) Image, this globular cluster(opens in new tab) The zodiac sign Sagittarius is a shimmering gemstone encrusted on a black velvet blanket.globular cluster(opens in new tab) Dense spherical group of stars: disco ball in space. This is called the Messier 55, or collectively the “Summer Rose Star”.
Hubble’s advantage is its sharp view from low-Earth orbit, allowing it to resolve individual stars in clusters. Some telescopes on Earth can also see her M55 star, but fewer by comparison. Hubble revolutionized our understanding of globular clusters, allowing astronomers to study what kinds of stars are inside them. Scientists are also interested in learning how they evolve over time and the role gravity plays in their construction.
Webb telescope captures star on the verge of supernova explosion
Tweet may have been deleted
(opens in new tab)
(opens in new tab)
Hubble also contributed to the knowledge of the so-called “Blue Rogues”.(opens in new tab)“Seen in globular clusters like this one. These objects are bluish and look younger than other stars around them, hence the name.”
Under certain conditions, the star receives additional fuel, ingests stellar steroids, becomes bulkier and brighter. Astronomers believe this happens when stars pull material away from nearby stars or when stars collide with each other.This phenomenon causes the blue straggler to Benjamin Button(opens in new tab)regressing from old age to the hotter, Brad Pitt stages of stellar life.
There are about 100,000 stars within Messier 55, and each tiny ray of light travels through space for 20,000 years before reaching the sensors of the legendary observatory run jointly by NASA and the European Space Agency. This snapshot is just a fraction of the entire star cluster spanning 100 light years.
NASA compares an image of a globular cluster (left) taken by its ground-based telescope, the Digital Sky Survey, with a Hubble photo.
Credits: NASA / ESA / A. Sarajedini / M. Libralato / Gladys Kober
i want more chemistry and tech news delivered straight to your inbox? Mashable’s Top Stories Newsletter today.
Globular clusters were first discovered by French astronomers in what is now South Africa in 1752.However, the famous observer Charles Messier(opens in new tab) I had a hard time seeing it when cataloging nebulae and star clusters(opens in new tab)That’s probably because Messier 55 doesn’t have a dense core and many of its stars are inherently faint, according to NASA.(opens in new tab)From his Paris observatory, a thick layer of air and water vapor obscured his vision. He did not document the object for another 26 years.
The star cluster appears globular because the extreme gravitational pull between the stars pulls them together. Within this group are 55 variable stars whose brightness varies with time.
in the meantime March(opens in new tab)many amateur and professional astronomers are trying to view all 110 northern hemisphere cosmic targets recorded in Messier’s catalog.
