Can we create a star on Earth?
So, we can create a star on Earth -- at least for a short time. But it remains to be seen if we can sustain such a creation and harness its astounding energy. Learn more about stars and energy by following the links on the next page.
Can stars form in the present?
Astronomers who believe the big bang and today’s other naturalistic origins theories would say stars can form in the present from clouds of dust and gas in space. Realize that no one saw these stars form.
How is a star born in a galaxy?
Star Formation Stars are born within the clouds of dust and scattered throughout most galaxies. A familiar example of such as a dust cloud is the Orion Nebula. Turbulence deep within these clouds gives rise to knots with sufficient mass that the gas and dust can begin to collapse under its own gravitational attraction.
What happens when a star becomes a protostar?
Over the course of a million years, the clump grows into a small, dense body called a protostar. It continues to draw in even more gas and grows even hotter. When the protostar becomes hot enough (7 million kelvins), its hydrogen atoms begin to fuse, producing helium and an outflow of energy in the process.
Can a star be made?
Well, stars are not made, they make themselves! Or maybe I should say: they come into existence because of a powerful force of nature called gravity. Galaxies are where new stars are born. In galaxies, there are very large and fluffy clouds of gas and dust called nebulae.
Can a star be artificially created?
To mitigate this issue, astronomers can create artificial stars instead by shining a powerful laser beam into the Earth's upper atmosphere. These laser guide stars allow almost the entire visible sky to be observed with adaptive optics.
Could we make a star on Earth?
So, we can create a star on Earth -- at least for a short time. But it remains to be seen if we can sustain such a creation and harness its astounding energy. Learn more about stars and energy by following the links on the next page.
Can we create a mini sun?
It's Definitely Possible! As it turns out, we can have an artificial sun on Earth, but as you might expect, creating an artificial sun takes a bit more than conducting a small experiment with regular equipment in a typical laboratory.
What is an artificial star?
A laser guide star is an artificial star image created for use in astronomical adaptive optics systems, which are employed in large telescopes in order to correct atmospheric distortion of light (called astronomical seeing).
Does nuclear fusion create a star?
All the elements in the Universe heavier than hydrogen and helium were made in stars through nuclear fusion. When the star dies these elements are then emitted into space. They move into nearby gas clouds, or nebula, and form the building blocks for a new generation of stars.
How do you make a real star?
How would you go about creating a star? On a basic level, it's quite simple to build a star. Simply gather a star's worth of gas and dust, let it collapse together under its own weight, and given enough time a star will form. This is how stars form naturally.
What fuel does artificial star use?
The Artificial Star is a power production facility that uses Antimatter Fuel Rods as fuel.
How young?
So, a question raised is why have the dust particles close to the star not evaporated when it is more than hot enough to vaporize them. This suggests the disks are very young indeed. To evolutionary scientists, the dust grains near the star would be perhaps hundreds of thousands to millions of years old. Over those kinds of time scales the dust could not still be so close to the star unless something keeps it from being too hot, e.g., gas shielding the dust from the star’s light. This is an example of how scientists assume processes they have not observed are at work in order to explain how the observed dust could still be present. Instead, why not consider the star and the disks to be only several thousand years old, then many of the difficulties of explaining the dust disks disappear.
How many cases of planets orbiting other stars?
There are over 200 cases of what are believed to be planets orbiting other stars. 6 The existence of planets orbiting other stars does not conflict with a creation viewpoint, though Christians have reason to be skeptical about naturalistic planet origins theories. 7.
How old would a disk be if it was created in the Creation Week?
On the other hand, if the disks were created in the Creation Week, they would still be only several thousand years old. An age of thousands of years means that the amount of change in the disk since the beginning would be limited.
What is an interferometer?
An interferometer combines the data from two or more telescopes that are separated from each other in such a way that the multiple telescopes act like one much larger telescope. A recent study looked at six stars known as Herbig Ae/Be objects, believed to be young stars still growing in size from their formation.
When were disks of gas and dust created?
Disks (and clouds) of gas and dust could have been created when the stars were created, just several thousand years ago . The dust disks dissipate over time, and today, astronomers studying these disks find that the disks do not always fit their models.
Do older stars have dust disks?
2 Astronomers have generally believed that older stars could not still have dust disks.
Do astronomers believe that stars have recently formed?
Instead, the properties of these stars, along with their location near gas and dust clouds where astronomers think that stars form is the basis for the belief that they are recently formed stars. Young-universe creationist physicists and astronomers tend to be skeptical of reports claiming certain stars have recently formed.
How do neutron stars form?
If the collapsing stellar core at the center of a supernova contains between about 1.4 and 3 solar masses, the collapse continues until electrons and protons combine to form neutrons, producing a neutron star. Neutron stars are incredibly dense - similar to the density of an atomic nucleus. Because it contains so much mass packed into such a small volume, the gravitation at the surface of a neutron star is immense. Like the White Dwarf stars above, if a neutron star forms in a multiple star system it can accrete gas by stripping it off any nearby companions. The Rossi X-Ray Timing Explorer has captured telltale X-Ray emissions of gas swirling just a few miles from the surface of a neutron star.
Why is the gravitational force at the surface of a neutron star immense?
Because it contains so much mass packed into such a small volume, the gravitation at the surface of a neutron star is immense. Like the White Dwarf stars above, if a neutron star forms in a multiple star system it can accrete gas by stripping it off any nearby companions.
What happens when a white dwarf forms in a binary system?
If a white dwarf forms in a binary or multiple star system, it may experience a more eventful demise as a nova. Nova is Latin for "new" - novae were once thought to be new stars. Today, we understand that they are in fact, very old stars - white dwarfs.
How are stars born?
Stars are born within the clouds of dust and scattered throughout most galaxies. A familiar example of such as a dust cloud is the Orion Nebula. Turbulence deep within these clouds gives rise to knots with sufficient mass that the gas and dust can begin to collapse under its own gravitational attraction. As the cloud collapses, the material at the center begins to heat up. Known as a protostar, it is this hot core at the heart of the collapsing cloud that will one day become a star. Three-dimensional computer models of star formation predict that the spinning clouds of collapsing gas and dust may break up into two or three blobs; this would explain why the majority the stars in the Milky Way are paired or in groups of multiple stars.
What is the Rossi X-Ray Timing Explorer?
The Rossi X-Ray Timing Explorer has captured telltale X-Ray emissions of gas swirling just a few miles from the surface of a neutron star. Neutron stars also have powerful magnetic fields which can accelerate atomic particles around its magnetic poles producing powerful beams of radiation.
How much energy does a red dwarf emit?
The smallest stars, known as red dwarfs, may contain as little as 10% the mass of the Sun and emit only 0.01% as much energy, glowing feebly at temperatures between 3000-4000K. Despite their diminutive nature, red dwarfs are by far the most numerous stars in the Universe and have lifespans of tens of billions of years.
What happens when a cloud collapses?
As the cloud collapses, a dense, hot core forms and begins gathering dust and gas. Not all of this material ends up as part of a star — the remaining dust can become planets, asteroids, or comets or may remain as dust. In some cases, the cloud may not collapse at a steady pace.
What happens to the protostar when it gets hot?
When the protostar becomes hot enough (7 million kelvins), its hydrogen atoms begin to fuse, producing helium and an outflow of energy in the process.
What is the name of the body that attracts more particles from the cloud?
Individually, a clump attains more mass and therefore a stronger gravitational pull, attracting even more particles from the surrounding cloud. As more matter falls into the clump, its center grows denser and hotter. Over the course of a million years, the clump grows into a small, dense body called a protostar.
What happens when enough mass collapses into the protostar?
If enough mass (0.1 solar mass) collapses into the protostar, a bipolar flow occur s. Two massive gas jets erupt from the protstar and blast the remaining gas and dust clear away from its fiery surface.
How long does it take for a star to reach its main sequence?
A star the size of our sun takes roughly 50 million years to reach main sequence and maintains that level for approximately 10 billion years [source: NASA ]. Astronomers classify the sun as a g-type main sequence star -- the "g" indicates the sun's temperature and color.
Why do stars not collapse?
Stars can be very very enormous in size, then why they not at once collapse to form a black hole. Because the pull inward (gravity) is equal to pull outward. So, what is the force, which tends to expand a star.
Do old stars burn helium?
Actually old stars outside their main sequence have almost finished burning their helium and started burning heavier elements, although all of them lighter than Fe-56. Whenever that thing starts burning, it's the beginning of the end and the star begins to die. As fusing the iron will not give extra energy, the photon pressure that keeps the star intact drops and the star begins its core collapse.
How often do supernovae occur?
If observations of supernovae in other galaxies show that such an explosion happens in a spiral galaxy like the Milky Way on average every 25 to 100 years, why have astronomers on Earth not seen a supernova explosion in our Galaxy since 1604?
How many white dwarfs are there in the sky?
A) there is no way to distinguish white dwarfs from other dim stars. That's why we only know two or three white dwarfs in the sky.
What are red giants made of?
A) red giants are made of carbon and oxygen throughout, which escape more easily. B) all red giants explode at the end of their lives. red giants are much hotter on their surfaces, allowing gases to move away. C) red giants are so big, the gravity at their surface (that holds material to the star) is less.
What happens after a star experiences a helium flash?
After it experiences a "helium flash" a star like the Sun will have a brief period of stability, fusing helium into carbon (and sometimes oxygen). During this brief stable stage, the star. A) gets to be even larger in diameter than it was as a red giant.
How much mass does the Sun lose?
E) The Sun will lose some mass during the late periods of its life, but the amount loss will be less than 1 %.
What happens when a star becomes a giant?
As a star becomes a giant, its outer layers are expanding. Where does the energy for expanding these layers come from?
