Stars-How They Are Formed Do you want to know how stars are born? Well here goes. The birth of a star begins when massive clouds of dust and gas start to collapse and break down. How does this happen? It happens through the force of gravity.Gravity bounds the elements together to crea...
Detailed observations of molecular gas in a tidal dwarf galaxy have important implications for our understanding of how stars are formed. A lot is known about galaxies. We know, for instance, that the stars within them are shaped from a blend of old star dust and molecules suspended ...
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they grow in mass. Thanks to their own gravity, they pull in even more gas and dust from the surrounding star-forming region. Over a million years (give or take), these clumps mature into dense bodies known as protostars.
Special emphasis is given to the formation of massive stars, which requires that several physical processes operate, as distinct from low-mass stars which are more easily formed. The picture of star formation is compared in some detail with many new and old observational aspects of the subject,...
It is difficult to study the centralregions of other galaxies because they are so far away, but it could be thatthis type of star formation is widespread in the universe, Bonnell said. "Supermassive black holes like the one in our galacticcenter are fairly common in galaxies," he said, "...
” explained study leader Elena Sabbi of the Space Telescope Science Institute in Baltimore in astatement. “We have several models that make predictions, and some of these predictions are contradictory. We want to determine what is regulating the process of star formation because these are the ...
objects discovered has a mass estimated at five Jupiters, about 1,600 times more massive than Earth. The presence of a dusty disk means the object almost certainly formed like a star, as space dust generally spins around a central object in the early stages of star formation, said Langeveld...
Around a third of galaxies have very little gas or dust and no regions of active star formation. The largest of these, the giant ellipticals, can be up to 300,000 light-years across, while dwarf ellipticals measure only a few thousand light-years. Spiral These are the most distinctive ga...
When the renowned cosmologist Carl Sagan declared that "we are made of starstuff," he wasn't speaking metaphorically. As Sagan said in the TV series "Cosmos," many of the elements in our bodies - "the nitrogen in our DNA, the calcium in our teeth, the ir