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Stars are formed when clouds of gas, predominantly hydrogen and helium, and dust begin to condense due to gravity. The collapsing cloud forms a large, hot core that develops into a star.


Star formation is the process by which dense regions within molecular clouds in interstellar ... Observations indicate that the coldest clouds tend to form low-mass stars, observed first in the infrared inside the .... live about 500 million years, and may migrate to the center of a galaxy, creating the central bulge of a galaxy.


How do stars form and evolve? Stars are the most widely recognized astronomical objects, and represent the most fundamental building blocks of galaxies.


Arp 299 is a system located about 140 million light years from Earth. It contains two galaxies that are merging, creating a partially blended mix of stars from each  ...

Feb 13, 2011 ... It requires more faith to believe that the big bang created such wonders and beauty. How is it that such marvelous creation came out of a... bang ...


A star is born when atoms of light elements are squeezed under enough pressure for their nuclei to undergo fusion. All stars are the result of a balance of forces: ...


Like so many things in the universe, stars begin very small -- mere particles in vast clouds of dust and gas. Far from active stars, these nebulae remain cold and  ...


Stars form inside relatively dense concentrations of interstellar gas and dust known as molecular clouds. These regions are extremely cold (temperature about ...


Dec 2, 2013 ... We owe our entire existence to the Sun. Well, it and the other stars that came before. As they died, they donated the heavier elements we need ...


Jul 31, 2008 ... A new simulation shows how the first stars evolved.