While the James Webb Space Telescope is already revealing new insights into the deepest recesses of the visible universe, the Hubble Space Telescope is far from it, as a new photograph of the Terzan 1 cluster shows.
Photo, Oct. 10 released by NASA and the European Space Agency (ESA), which are jointly running the mission, shows a globular cluster located 22,000 years from Earth, displaying a brilliant palette of different colors. stars with wonderful clarity.
This is not the case Hubble Space Telescopephoto of the Terzan 1 cluster; NASA released previous decision in 2015. According to the ESA it is saidthe 2015 photo was taken using Hubble’s Wide Field Planetary Camera 2, which operated until 2009. That instrument had a much lower resolution than the Observatory’s current Wide Field Camera 3, which took the new image and which the astronauts installed during the last mission of the Hubble service. .
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The new photo shows the height globular cluster far more diffuse than the previous image, showing a multitude of crimson, aging stars bound together by mutual gravity. Globular clusters typically gather about 100,000 stars into a tight, roughly spherical shape. The stars are so closely grouped together that the average distance between any two individual stars is about one light year, about a fourth of the distance between the sun and the nearest star; Next to Centauri.
These clusters are often home to some of the oldest stars in our galaxy, which appear red in the Hubble image, while the blue stars in the photo are smaller star bodies that are not part of the cluster, although they certainly add some panache. to the wall stars
“The ages of the stars in the globular cluster tell us that they were formed in the early stages of galaxy formation,” ESA officials wrote in a 2015 statement about the older photo. “Studying them can also help us to understand how galaxies are formed.”
Globular clusters like Terzan 1 are notable local sources of X-rays, noted by OESA. “It is likely that these X-rays come from binary star systems that contain a neutron-dense star and a normal star,” they wrote. A neutron star is the super-dense remnant left behind like a star exploding when the fuel runs out. “A neutron star pulls material from its companion star, causing the emission of X-rays.”
Scientists are not sure how many high-mass or medium-mass stars? black holes they are hidden inside globular clusters like Terzan 1. Since it is impossible to “see” a black hole – they absorb light rather than scatter it – a telescope is best used to detect them by observing the gravity in the surrounding stars. Unfortunately, this is much more difficult to do in a globular cluster because of the density of stars.
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