Kepler-62f Super-Earth Exoplanet

Stellar evolution stars exist because of gravity. The two opposing forces in a star are gravity (contracts) and thermal nuclear energy (expands). Stage 1 Birth is where gravity contracts the cloud and the temperature rises, becoming a protostar. Protostars are a hypothetical cloud of dust and atoms in space which are believed to develop into a star. Astronomers are fairly certain of their existence. Protostars are formed about a million years after a gas clump from an interstellar gas cloud has started

Existing models of stellar evolution indicate that the star was born in the Nebula (also called molecular clouds). It is generally believed that the nebula has the number density of molecules about 〖10〗^(-4)~〖10〗^6/〖cm〗^3 in the Milky Way, 70% of which is made of H_2, most of the rest is He. Lower temperature nebula eventually gave birth to low-mass stars. Higher temperatures nebula called giant molecular clouds, this nebula will produce a variety of stars which have all sorts of mass. If its gravitational energy is balanced by pressure, the molecular cloud would have been in a state of hydrostatic equilibrium.

It started five billion years ago as a cloud of dust and gas about 10 billion kilometers in diameter that rotated slowly in space. This massive cloud shrank over time because of its own gravitational pull, or because of an exploding passing star. Most material collected in the center and it rotated faster as it shrank. Compression of the material made it hotter, which started hydrogen fusion, forming the sun. Ten percent of the material in the cloud formed a disk around the sun. Due to friction in the disk, most of the mass collected into whirlpools. These whirlpools shrank to form protoplanets. These protoplanets became planets and moons. Excess material became comets, asteroids, and meteoroids. A problem with this hypothesis is that it would be unlikely for a passing star to explode, because stars are very far apart from each other. Also, as with the nebular hypothesis, it would take an unreasonable amount of gravitational pull for the disk to condense into

Okay so it all started as a nebular cloud. This this crowd was gargantuan it was about two light-years across from end to end and it was very cold and not dance at all. Since this cloud was so spread apart I meant that gravity alone was not enough Force to cause the particles of the clouds to come together. This means that some outside force had to act upon the cloud and that force was probably the explosion of a nearby star. When the star exploded it started a chain reaction that allowed gravity to take hold of the particles and begin the compression of the particles.

The cloud contracted under its own gravity and our proto-Sun formed in the hot dense center. The remainder of the cloud formed a swirling disk call the solar nebula. A solar nebula is a gaseous cloud. The nebular hypothesis has become the theory of the origin of our solar system. We can relate this to the vermiculite solar nebula lab. These are related because in the lab it showed us how gravity pulled most of the materials toward the center of the water which the water was representing gravity and the vermiculite that got pulled to the center was modeling the heavier more dense planets. The vermiculite that was pushed away from the center represented lighter less dense

When the sun was a young star, the leftover material formed what would be planetary disks. These are accounted by all the planets in the solar system. Venus was made into the second planet from the sun. Over the next billion years the planet formed. There

The Nebula is the first stage which the star is born. The Nebula is actually a cloud of hydrogen gas and dust in space. There are a couple different types of

There are nearly 2,000 exoplanets on the books, and much is known about them, at least in broad strokes, such as their sizes, masses and distances from Earth. Yet the details that give these celestial bodies their individuality — weather, winds, air, and even the colors of their skies — remain scant. This is particularly true for the growing number of small, Earth-size exoplanets, from which astronomers hope to glean clues about life's potential genesis elsewhere in the

The first process every star goes through before its end is the process of their core shrinking. When stars of at least .4 M begin to exhaust their hydrogen supply, the hydrogen starts to fuse in a shell that is outside the helium core. As the shell burns more hydrogen it is also producing more helium, this allows the core to increase in its mass and temperature. When the temperature increases greatly, helium fusion begins to start in what is called a helium flash, causing the star to rapidly decrease in its size and increase its temperature. Once the star has fused all of the helium out of its core, the product of the carbon will fuse which produces a hot core along with the outer shell made up of fusing helium. The more massive a star is,

when a star explodes as a supernova most of its matter is blow away into space .Is a star with a initial mass of 0.5 to 8 times that of earth’s sun .it spends most of its time on the main sequence as an orange ,yellow or blue dwarf star.all stars are little clouds of gas .it begins to collapse under its own gravity .This star is made by when the sun shucks off its outer layers it will create a beautiful shell of diffuse gas known as planetary nebula .The first planetary nebula with was discovered with a bright in 1790 .These stars are made up of dust or gas.New technology has captured a number of phenomenal images of planetary nebula in extreme depth .where scientist thought that the gaseous layers came off evenly , images from the hubble space telescope have revealed a wide array that it could be the fate of our closest star . These stars are born just like average

Remember the phrase “We are all star stuff”, we’ll it’s true. The matter and elements our bodies contain were made from a detonating star, which has additionally given us distinctive numbers planets and different stars. The blast of a star is known as a supernova (supernovae for plural employments). Supernovas are extremely intriguing, brilliant, and vital, for a hefty portion of reasons, however to start with, you'll need to comprehend what a supernova is.

Around 14 billion years ago, a giant nebula concentrated into a single tiny point, then proceeded to enlarge rapidly in a hot explosion and continues to expand. This explosion is said to have created the Universe, and is called the “big bang”. This same process happens when a star is being created. A large cloud of dust and gas, called a

You are probably wondering where did these things come from and how are they formed? Well I am about to tell you, Low mass stars are formed when all the helium has fused into carbon, then the core collapses. As the star collapses, the outer layers of the star are expelled. A planetary nebula is formed by the outer layers a massive star that will undergo a supernova explosion. Then when the low mass star is done forming after billions of years they start to become giants.

There are nine planets in our close planetary system, yet there are now 8 existing due to Pluto not being considered a planet any longer but rather it is known that there are billions of different planets in the universe that circle our universe (stars and sun). A star is a self-glowing collection of hot gas that creates its own vitality. Our sun is a normal star, and the planets that circle it are a piece of our close planetary system. Our nearby planetary group is a piece of the Milky Way Galaxy, which is 75,000 ly in measurement. A large portion of the gas and tidy in the system can be found in the winding arms, which is where new stars are conceived.

Indecent bodies like the sun. Stars are made up of big exploding balls of gas, mostly hydrogen and helium. The sun is similarly a star made up of huge amounts of hydrogen, undergoing a continuous nuclear reaction like a hydrogen bomb. Stars come about when vast clouds of hydrogen, helium and dust contract and collapse due to gravity. The clouds came from astronomical plasma from “The Big Bang”, but the dust comes from the supernovae of other stars.