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Why do astronomers believe that globular clusters are made of old stars?
Astronomers believe the globular clusters are made of old stars because of the lack of heavy elements. The heavy element is very abundant in stars like our sun, so the theory is the globular cluster must be older and formed in a more primitive universe.
Which kind of star is most likely to be part of the spheroidal population?
Old, low-mass stars like red dwarfs are most likely to be part of the spheroidal population. These stars are typically found in galactic spheroids, which are regions of galaxies composed of older stars in a more spherical distribution.
What is the difference between young stars old stars and dead stars?
Young stars are newly formed stars, often bright and hot, that are still in the early stages of their life cycle. Old stars are stars that have aged and passed the main sequence phase, becoming cooler and larger. Dead stars refer to objects that were once stars but have reached the end of their life cycle, such as white dwarfs, neutron stars, or black holes.
Suppose you discovered a star made purely of hydrogen and helium how old do you think it would be?
A star made purely of hydrogen and helium would likely be a very young star, possibly only a few million years old. This is because heavier elements are usually created through nuclear fusion within stars over long periods of time, so a star lacking these heavier elements would be relatively young in cosmic terms.
Did humans evolve from stardust?
In the most abstract sense of the term, not the biological sense (until later on of course). You could say that you and everything around you was made from stardust. This is because almost all the elements in our bodies (except hydrogen and helium) and in objects around us were synthesized either within stars or during supernovae through a process called nuclear fusion. When stars die they eject the elements into interstellar space in the form of gas and dust. Over long periods of time the elements making up these clouds of gas and dust come together to form stars, planets, and eventually us. Billions of years ago there were no elements, just protons and electrons - they grouped together to form hydrogen (one of each particle). Then through weak gravitational interactions they began to form into clouds, massive clouds. Which eventually become denser and denser and their gravity becomes stronger and stronger until they crunch down to form a star, which is essentially a massive ball of hydrogen whose gravitational force causes the hydrogen within to fuse together releasing massive amounts of nuclear energy (like an atom bomb) and converting the hydrogen into partly heat and light radiation and partly other elements. Hydrogen + hydrogen = helium, hydrogen + helium = something else and so on and so forth until eventually you get everything from gold to plutonium. This is how the matter which makes up our body (which is still about 70% hydrogen since the universe is 90% unconverted hydrogen) formed, so yes, we did come from stardust.
How old do stars get?
Most stars get about 1-10 billion years old.
How is there oxygen in stars?
Most stars that are around today are made of old material from dead stars. Those old stars produced oxygen as a product once they started fusing helium and heavier elements. Some old stars are currently producing oxygen through nuclear fusion.
Two common names for the flag are Stars and Stripes and?
Old Glory
Name the gases that make up most stars?
Hydrogen and helium. It's better to ask which two ELEMENTS make up the bulk of the stars, since ALL elements in a star are in the gaseous state.
Why do astronomers believe that globular clusters are made of old stars?
Astronomers believe the globular clusters are made of old stars because of the lack of heavy elements. The heavy element is very abundant in stars like our sun, so the theory is the globular cluster must be older and formed in a more primitive universe.
What was the most common occupation of the Old Kingdom?
Farmers,slaves,and servants was the most common occupation in the Old Kingdom.
Nicknames for the us flag?
Old Glory is one of the nicknames used for the US flag. The stars and stripes is another common nickname.
What are some galaxy facts?
most ellipical galaxies have old stars
What elements make up the stars in globular clusters?
The same as on Earth - but in different proportions. Most stars are made up almost entirely of hydrogen and helium; the so-called "metals" (heavier elements) are present in much smaller quantities.
What is the most common weight for a ten year old?
35 kgs is d most common weight for a ten year old
What name was given to the US?
There are several nicknames apart from the official name which is, logically, Flag of the United States; the most common nicknames are "Stars and Stripes", "Star-Spangled Banner" and "Old Glory".
What elements are in stars?
All stars are primarily hydrogen, which is the most common element in the universe. As they fuse hydrogen, they create helium, and sometimes lithium. In old stars that have run short on hydrogen fuel, they will begin to fuse the helium "ash" of the original fusion into carbon, oxygen, and other heavier elements. VERY large and massive stars will fuse that material into every element all the way up to iron. IN the moment of its death, very massive stars explode in supernova explosions. This fuses the iron and other heavy metal elements into every element up beyond gold, lead and uranium. The core of the massive star is crushed into a neutron star or, in extreme cases, into a black hole. The middle and outer layers of the star are blasted back into space, including much of the metal mass created in the instant of the supernova. From the fact that our Sun contains traces of heavier elements (and from the fact that the Earth contains metal elements like iron and lead) we know that our solar system is a 3rd generation star, formed from the detritus of previous stars.
