There are 3 stars in our heaven that are approximately 12 billion years old and they live inside the Milky Way, a few thousand light-years away from earth. For the very first time, scientists have discovered a rare element among these three stars. To our knowledge, they have also find out a bolstering evidence to prove that how such elements are created in the atmosphere.

This element is known as Tellurium and it is a brittle and toxic semiconducting metal. It was with the help of the Hubble Space Telescope that the astronomers from MIT and other institutions were able to see this element. This was possible for them, because tellurium glows the light that it absorbs.

Scientists took many years and they performed several trials to discover this element. Reason behind this is that the wavelength of starlight that tellurium soaks up is in the ultraviolet part of the electromagnetic spectrum. And this is the light that is generally absorbed by our atmosphere. Therefore, it was difficult for any one on the ground to detect tellurium without Hubble, orbiting high above our atmosphere, to discover this element.

As said by Anna Frebel, an Assistant Professor of astrophysics at MIT, "We want to understand the evolution of tellurium -- and by extension any other element -- from the Big Bang to today. Here on Earth, everything's made from carbon and various other elements, and we want to understand how tellurium on Earth came about".

Around 13.75 billion years ago, right away the Big Bang, it was only hydrogen, helium and lithium that existed in the universe. But with time, as the Universe cooled down because of collapsing clouds of gas under gravity, the elements heavier than lithium started coming into existence inside the cores of baby stars. During this course of time, there were no elements like carbon, oxygen and iron. These were produced only by the violent death of stars.

And since tellurium is present in these three ancient stars, therefore it is expected to be produced by a quick and rare kind of supernova only.