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Astronomers Start Looking For The Universe’s First Stars

Astronauts are getting near to a signal that has been flowing all over the Universe for more than 12 billion years, bringing them closers to knowing the death and life of the very ancient stars.

In a study posted on arXiv website and soon to be posted in the Astrophysical Journal, the ASTRO 3D (ARC Centre of Excellence for All-Sky Astrophysics in 3 Dimensions) and a group spearheaded by Dr Nichole Barry from University of Melbourne in Australia reports a 10-times enhancement on data collected by the MWA (Murchison Widefield Array). It is a compilation of 4096 dipole antennas located in the distant hinterland of Western Australia.

The MWA, which began working in 2013, was developed particularly to identify electromagnetic radiation given out by neutral hydrogen—a gas, which included most of the early Universe in the period when the crowd of disconnected neutrons and protons produced by the Big Bang began to settle down.

Ultimately these hydrogen atoms started to clump together to create stars starting a major segment in the development of the Universe, dubbed as the EoR, or Epoch of Reionisation. “Defining the development of the EoR is very essential for our knowing of cosmology and astrophysics,” claims Dr. Barry.

On a related note, a new research by astronomers at McGill University has discovered that the temperature on the nightsides of several hot Jupiters—worlds that are the same size as that of Jupiter, but revolves around different stars—is shockingly uniform, recommending the dark sides of these huge gaseous worlds have clouds composed of rocks and minerals.

Employing info from the Hubble Space and the Spitzer Space telescopes, the scientists from the McGill Space Institute discovered that the 12 hot Jupiters’ nightside temperature they examined was almost 800°C.

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