Supernova In The Milky Way

Discoveries of what were termed “nebulae” began in the early 17th century. The first of these discoveries was the Orion Nebula, which looked like a normal star to the naked eye. French scholar Peiresc discovered it in 1610 using one of the first telescopes to be made. Later, in 1656, Christiaan Huygens observed the interior of the Orion Nebula and determined that it consisted of a compact quadruple star system instead of a singular star. During the 18th and 19th century, nebulas were discovered even though astronomers were mainly scanning the sky for comets. Some major astronomers who contributed greatly to the discovery of nebulas, among other things, during the 18th and 19th century were Messier and the Herschel family. Though the instrumentation available to astronomers during the 18th and 19th century were highly advanced compared to earlier times, they weren’t advanced enough to detect the motion of extragalactic objects or their composition. This lack of precision instrumentation, and thus the dissociation from motion of stars/star-clusters/nebulae, were the main reasons astronomers during this

I’m bummed I’m probably going to miss out on these events because, for a few weeks, it’ll look almost as if Earth has two Suns. Despite being hundreds, thousands of light-years away, their supernovas will shine brighter than the full moon at night and will be visible even during the day. But the REAL sky show comes in 3.75 billion years. Our galaxy is full of stars, viewed from the surface of the Earth, they look like tiny drops of milk in the sky. Which is why we call it the Milky Way Galaxy. But all galaxies are named after milk. Milk, lactose, lactic, GA-lactic, galaxies. And every drop of milk that you see in the sky, every star that you can see, is inside our galaxy the Milky Way. But there’s a blurry distant shape. It’s not a star, it’s not a cloud of gas in our galaxy, but it is an entirely different galaxy - the Andromeda

∼ 100 times brighter than the stars of its host galaxy. Seyferts and QSOs, however, are not

The Orion Nebula is one of the closest stellar regions to the Earth. Using parallax measurements, it has been estimated that this nebula is only 1,500 light years away. In addition, the Orion Nebula is a

Most stars, around 70 percent, are red dwarves, which are less massive than the sun. These stars are immortal, to our purposes. Their lives are several orders of magnitude longer than the sun's. There are many more that aren't red dwarves but are still less massive than the sun. Most stars we can see with the naked eye, however, are more massive, and stellar lifetime decreases rapidly with mass. There isn't a red dwarf close enough to be seen naked eye. So most that you see in the

Of all the stars in our universe, red dwarfs comprise up to seventy percent. “Scientists think that 20 out of the 30 stars nearest to Earth are red dwarfs; however, none of them can be seen with the naked eye. The closest star

In further detail, the celestial object contains massive stars that shape the nebula and pillars of dense gas that may house budding young stars. The heaviest stars at the center are called Trapezium because they are arranged in a trapezoid pattern (Hubble,2006). The stars near Trapezium are young and still have protoplanetary disks, too small for us to see yet. At the bottom of the nebula there are brown dwarfs that couldn’t be stars, this explains the darker shade of red in the image. The row of three stars make up the belt of the hunter, Orion. It has bright supergiant’s Betelgeuse, and Rigel at the upper left shoulder and

Although once foreign giants to man, stars live some of the most explosive lives possible. Over billions of years, the violent development of stars from conception to death is one that had perplexed mankind for a while. Though as we formed a better understanding of how they develop, humans have learned that these stellar orbs directly influence the formation of, or death of objects in the universe. Stars are phenomenal objects in our universe that are instrumental to its development.

This article talks about how a star explodes. When a star explodes, it either completely blows up or it leaves a black hole behind. Some stars explode with titanic explosions called Supernovae. Supernovae are put into two categories, Type I and Type II. A well known Type I is called Type Ia. Type Ia is when a white dwarf star blown up. One theory as to why this happens is called stellar cannibalism. This is when a white dwarf star has a star that is near it, it might steal gas from the star. Type II supernovae however, are most likely born in galaxy spiral arms. Type II supernova's brightness usually stays bright for up to two months. Then it goes down over the next few months. I would definitely like to read more about the explosion of stars,

In most cases a star will move into the planetary nebula phase, as an expanding, glowing shell of hot gas also known as plasma. This happens from a low-mass star in the end of their red giant phase, becoming unstable. The exterior layer drifts away from it’s core, which is now consider a white dwarf star, due to stellar winds. If the dying star have a mass of over 8 suns, it will become a supernova. Just like a planetary nebula, the cause of it is when a star runs out of nuclear fuel. From the massive star’s lack of outward pressure to balance its inward gravity, the star collapses into the core expelling a nuclear explosion. Also like the nebula, gas and dusts are scattered around space that will be used for the birth of future stars. At this point, the former supergiant is either a neutron star or a black

Third, the observations of Novae. Shapley said that in certain lights obervées "novae" seen in the spiral nebula, implies that there is more light was far more nebulous. Curtis noted that these abnormal events pourait be a member of another class called supernovae today, they are referred to as during the debate "New Class".

For my term project, I plan on addressing the observation of SN 1572, better known as “Tycho’s Supernova”, by conducting a solo, explanatory podcast. Observed by Tycho Brahe in 1572, this supernova challenged the way astronomers conceived of the universe. Prior to advanced telescopes and other technology, naked-eye observations were crucial to provide evidence to support the Ptolemaic or Copernican way of thinking, rather than the Aristotelian system (Bennett et al. 68). Aristotle, and others later on, previously believed that the universe was “perfect and unchanging” (71). While Tycho may not have been able to explain everything that he saw, he measure its stellar parallax to observe that this supernova was much further away from the Earth

Even though such an event would be so large compared to our small galaxy not even the gravitational waves would be able to be noticed. What would we notice then with such a close examination? Well one thing would be the mergers kilonova, a explosion 1000 times stronger than that of a normal supernova, and, this would appear as a sudden bright star appearing in our sky that could last up to several hours at best, however other than the sudden bright star nothing else would likely be detected from such an event. But, if such an event were to occur within fifty light years of Earth a cataclysm could easily kickstart and would likely only last a few seconds as our biosphere disintegrated. Many researchers have found evidence for a supernovae that occur twenty million years ago 325 light years away from Earth, nearly six times the distance of one that would extinguish life on Earth permanently, and, many believe it to be the cause of many ice ages as well as a large disposition of iron in the sea floor. If we would even see it coming is another thing as many collision such as this tend to emit gamma rays from formed jets and if it was not aimed at us we would not even be able to see the outcome of the event. However, kilonovae are estimated to only occur once every 10,000 years so something like this happening is very unlikely to happen anytime

The Milky Way is so named because across the night sky, it has a milky appearance. In 1924, astronomers found out that the Milky Way was not the only galaxy. The oldest star in the Milky Way galaxy is over 13 million years old. For the sun to orbit the milky way, it takes between 225 million and 250 million years. A Galactic Year is the time it takes for the Sun to orbit the Milky Way one time. The Milky Way is growing by merging with other galaxies through time. It is currently acquiring stars from a very small galaxy called the Sagittarius Dwarf Spheroidal. It is also eating up material from the Magellanic Clouds. The Milky Way has several satellite galaxies and is part of the Local Group of galaxies, which is a component of the Virgo Supercluster. The Milky Way is the second-largest galaxy in the Local Group. The milky way has at least 100 billion planets. The most known planets are in our solar system. They are in order from closest to the farest away from the sun. Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Planet Nine which use to be Pluto. Surrounding the Galactic disk there is a spheroidal halo of older stars and globular clusters which 90% of it lies within 100,000

Main sequence stars like our own sun enduring in a state of nuclear fusion during which they will produce energy for billions of years by replacing hydrogen to helium. Stars change over billions of years. When their main sequence phase ends they pass through other states of existence according to their size and other characteristics. The larger a star's mass, the shorter its lifespan is. As stars move toward the end of their lives, much of their hydrogen will be converted to helium. Helium sinks to the star's core and raises the star's temperature—causing its outer shell to expand. These large, puffy stars are known as Red Giants. The red giant phase is actually a prelude to a star shedding its outer layers and becoming a small, dense body called a White Dwarf. White dwarfs cool down for billions and billions of years, until they finally go dark and produce no energy at all. Once this happens, scientists have yet to observe, such stars become known as Black Dwarfs. A few stars avoid this evolutionary path and instead go out with a bang, exploding as Supernovae. These violent explosions leave behind a small core that will then turn into something called a Neutron Star or even, if the remainder is large enough, it is then turned into something called a Black Hole.