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...
too. Three glowing red charcoal briquettes put out more energy than one glowing red charcoal briquette at the same temperature. Likewise, if two stars are the same temperature but different sizes, then the
Such structures include multiple-ring systems, hourglass-shaped nebulae, and butterfly-type morphologies, and they are found around quietly dying Sun-like stars as well as around massive stars that explode as supernovae (see the figure). The formation mechanism of these structures is connected to...
A few hundred of these are scattered above and below the disk. The stars here are much older than those in the galactic disk. Halo A halo is a large, dim, region that surrounds the entire galaxy. It's made of hot gas and possibly dark matter. Gravity All of these compone...
“Stars are the machines that sculpt the universe. We would not have life without stars, and yet we don’t fully understand how they form,” explained study leader Elena Sabbi of the Space Telescope Science Institute in Baltimore in astatement. “We have several models that make predictions,...
A nebula ais one of the most beautiful deep-sky objects in the night sky. But what is a nebula? And how do these space clouds form?
a reflection nebula in the constellation Perseus some 960 light-years away that has a number of star clusters inside of it. These rogue planets originated in a process that usually forms stars, and have some of the lowest known masses for objects that formed this way. They add to a growing...
How many stars are there in the universe?(不需要准确数字) Where do they come from and where do they go to? What is the most common chemical element in the universe? How are all the other chemical elements formed? Define the terms:Galaxy,nebula,black hole,supernova,comet,asteroid,meteorite...
These objects are some of the densest in the Universe, yet are typically just slightly bigger than our own planet. Nevertheless, they can reach temperatures of over 100,000°C.At the centre of the Southern Ring Nebula is a hot, dense white dwarf star. As it transformed into a white ...
We see that galaxies are move away from each other but how does that prove that space is expanding? What is a black hole and how does a black hole form? Are there parallel universes? We know that dark matter must exist in galaxies. If not, many of the stars in a galaxy would ___...