The closest star to Earth is our very own Sun, so we have an example nearby that astronomers can study in detail. This means that whatever causes the brightness changes must be cyclic (i.e. The fusion process forces hydrogen atoms together, transforming them into heavier elements such as helium, carbon and oxygen. Following this, stars develop in … Stable atoms retain their form indefinitely, while unstable atoms undergo radioactive decay. Biology; 5 points; Please explain to me the basic difference between … As such a frequently executed manoeuvre, it’s vital that you do what you can to ensure any risk is sufficiently reduced — but how do you do it? Moreover, stars are responsible for the manufacture and distribution of heavy elements such … Orbiting the nucleus is a cloud of lighter, negatively charged electrons. By continuing to browse our site you agree to our use of cookies. As it expands, it cools and glows red. All the applicants will be contacted, so please be patient. Ask for details ; Follow Report by EdmotoSantiago5584 15.08.2017 Log in to add a comment There are many reasons why a star might increase in brightness in a sudden and explosive-like manner; the collision of two stars, core changes, unstable pulsations. The title supergiant, as applied to a star, does not have a single concrete definition. Smaller stars (like our Sun) eventually become faint white dwarfs (hot, white, dim stars) that are below the main sequence. it doesn't destroy the star). This gives information of the … That is, the electrons separate from the nuclei to give a mix of positively … How do stars form and evolve? It will become 166 times larger than the sun we knew. Please, do not share them with anybody! All stars, irrespective of their size, follow the same 7 stage cycle, they start as a gas … When the star … Stars that evolve into this area also become very unstable, shedding vast quantities of their masses. The lessons we learn about the Sun can be applied to other stars. Why people become mentally unstable ? Tell me more about the Sun. Gravity constantly works to try and cause the star … UNSTABLE 'UNSTABLE' is a 8 letter word starting with U and ending with E Crossword clues for 'UNSTABLE' Clue Answer; Not firmly fixed (8) UNSTABLE: Synonyms, crossword answers and other related words for UNSTABLE We hope that the following list of synonyms for the word unstable will help you to finish your crossword today. In case of … HST Image Credit: Jon Morse … The unstable nuclei lie above and below the line of stability in the neutron – proton plot. In unstable nuclei the strong nuclear forces do not generate enough binding energy to hold the nucleus together permanently. Also why are fission stars so rare compared to fusion stars? In the familiar planetary model, an atom consists of a nucleus of heavy positively charged particles, called protons, and electrically neutral ones called neutrons. Spectral Classes. All stages of fusion are exothermic (i.e. The outer shell of the star, which is still mostly hydrogen, starts to expand. The exact lifetime of a star depends very much on We're excited to hear you’re interested in becoming a Moderator on Brainly! Since 1996, a science team has been monitoring the X-ray flux from this region using RXTE. A cloud of dust and gas, also known as a nebula, becomes a protostar, which goes on to become a main sequence star. Definition. … Relevance. We've arranged the synonyms in length … I just noticed I'm asking a ton of questions, so forgive me if I annoy anyone with my lack … What's the solution to cure that person? In the core of a star, gravity produces high density and high temperature. A star system or stellar system is a small number of stars that orbit each other, bound by gravitational attraction. The radioactive elements emit; alpha particles (a) – 2 protons and 2 neutrons (helium nucleus) beta particles (b) – a high speed electron; gamma rays (g) – a photon . The density of gas in the core of our sun is 160 g/cm 3, much higher than the densest metal, and the temperature is 15,000,000 K (27 million degrees Fahrenheit). And how does it feel like to be in that state ? The nucleus of … Add your answer and earn points. Answering questions also helps you learn! The age, distribution, and composition of the stars in a galaxy trace the history, dynamics, and evolution of that galaxy. All applications will be reviewed within 48 hours by the Administrator or designated moderators. The Brainly community is constantly buzzing with the excitement of endless collaboration, proving that learning is more fun — and more effective — when we put our heads together. Shoneitszeliapink . Answering questions also helps you learn! Stars. Red giants are bright red in color. Star systems are not to be confused with planetary systems, which include planets and similar bodies (such as … If you believe you qualify to become a Trusted Helper, you can apply today! These hot, shrinking stars have depleted their nuclear fuels and will eventually become cold, dark, black dwarfs. It is unstable nuclei that are radioactive and are referred to as radioactive nuclei and in the case of their isotopes called radioisotopes. As a member, you'll also get unlimited access to over 83,000 lessons in math, English, science, history, and more. It is stable, with balanced forces keeping it the same size all the time. When such a star has exhausted the internal thermonuclear fuels in its core at the end of… sonusharma45 sonusharma45 1 hour ago Science Secondary School How does blackhole formed ?? For most of its lifetime, a star is a main sequence star. Stars with about eight to 20 solar masses become neutron stars when they die. When the new star reaches a certain size, a process called nuclear fusion ignites, generating the star's vast energy. Surely the best way to image quark (dwarf) stars as free “quark soup” – where quarks become free as electrons do in the Fermi Sea within stars. Biology; 5 points; Please explain to me the basic difference between … Stars come in a variety of masses and the mass determines how radiantly the star will shine and how it dies. This radiation starts up being trapped inside the star, and it can take more than 100,000 years to work its way out. All stars begin life in the same way. Help the community by sharing what you know. Some yellow hypergiant stars may be within a short phase as they evolve from red to blue. : No member of our Team will ever ask you for your passwords or other credentials for Brainly, Facebook, Twitter, e-mail, etc. Ask for details ; Follow Report by Kavyadixit8063 31.03.2018 Log in to add a comment Favorite Answer. A star is a sphere of gas held together by its own gravity. As RXTE continues to provide the first detailed monitoring of the X-ray emissions of Eta Car, coordinated observations are helping answer many scientists' questions. Help the community by sharing what you know. Others may actually be very hot stars, but with a "pseudo-photosphere", which is a lot cooler, thus manifesting as yellow. When the hydrogen supply in the core begins to run out, and the star is no longer generating heat by nuclear fusion, the core becomes unstable and contracts. Limit risk of slips and falls when mounting/dismounting truck. - 22458225 The Brainly community is constantly buzzing with the excitement of endless collaboration, proving that learning is more fun — and more effective — when we put our heads together. 4 Answers. How does a protostar become a star? So, why do stars die? When this occurs, the star will expand to become a red giant. A star's life is a constant struggle against the force of gravity. Eta Carinae is an extremely massive star in our galaxy, and an extremely unstable one. Why does a star become unstable after the formation of iron by fusion? This occurs over an approximately 100 million year … Most naturally occurring atoms are stable and do not decay. I assume Uranium isn't the element that can be made unstable, if so, what determine if an element can be made unstable, and if it could be made unstable, would it be fissile? Anonymous. If the forces between the protons and the neutrons in the nucleus are unbalanced, then the atom is unstable. Alpha … An atom is stable because of a balanced nucleus that does not contain excess energy. At this temperature, the hydrogen and helium gases become a plasma. Evolutionary effects on these stars are not negligible, even for a middle-aged star … Plus, get practice tests, quizzes, and … Explanation:A black hole can be formed by the death of a massive star. It is red because it is cooler than it was in the main sequence star … This is almost as large as the orbit of the earth today. Answer Save. Star Type Color Approximate Surface Temperature Average Mass (The Sun = 1) Average Radius (The Sun = 1) Average … 4 years ago. Because they do … When a nucleus decays does it become more unstable or stable? The planets Mercury and Venus will be devoured in the flames of the giant star… Bismuth with a proton number (z) of 83 is the stable nuclei with the highest number of protons. The star has now reached the red giant phase. ATTENTION! Ask for details ; Follow Report by Vishwanathview7928 31.03.2019 Log in to add a comment Star - Star - Star formation and evolution: Throughout the Milky Way Galaxy (and even near the Sun itself), astronomers have discovered stars that are well evolved or even approaching extinction, or both, as well as occasional stars that must be very young or still in the process of formation. The term giant star was first coined by Hertzsprung when it became apparent that the majority of stars fell into two distinct regions of the Hertzsprung–Russell diagram.One region contained larger and more luminous stars of spectral types A to M and received the name giant. All nuclei with proton numbers above 83 are unstable, they are RADIOACTIVE. Shoneitszeliapink. However, novae are often recurrent, meaning that after 50 to 100 years the nova will go off again. To better understand unstable atoms, it helps to appreciate what constitutes stability. Stars are the most widely recognized astronomical objects, and represent the most fundamental building blocks of galaxies. Adam says: July 1, 2008 at 3:38 A… Stable & Unstable Nuclei. Protons and electrons have equal … We use cookies to improve your experience on this website. A large group of stars bound by gravitation is generally called a star cluster or galaxy, although, broadly speaking, they are also star systems. By what I have read, would an atom become unstable when it reaches a specific isotopic ratio? The stars run out of fuel as they age and their central cores collapse … BECOME A BRAINLY HERO! How does a star become a black dwarf? outputs more heat than is needed to initialize the reaction), until the mass of the atom reaches 56 atomic … 2 See answers sonusharma45 is waiting for your help. A typical star begins as a thin cloud of hydrogen gas that, under the force of gravity, collects into a huge, dense sphere. Nuclear reactions at the center (or core) of stars provides enough energy to make them shine brightly for many years. Massive stars transform into supernovae, neutron stars and black holes while average stars like the sun, end life as a white dwarf surrounded by a disappearing planetary nebula. Here, Forklift training provider Mentor, provides some tips to help you avoid some of the most common hazards, ensure safe practice and prevent costly accidents: 1. They are also larger and much more luminous than main sequence stars. As the red giant’s core continues to collapse under the force of gravity, it will become dense enough to convert its remaining supply of helium into carbon. The first step to becoming a Moderator is to become a Trusted Helper If you're active on Brainly and provide quality answers to help other users then you may be eligible.. The life history of stars The life cycle of a star Stars are formed in clouds of gas and dust, known as nebulae.
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