What We Can Learn about Stars Using Spectra

Astronomy, is for me, why we are even here at all. As humans [and wizards], we owe our lives to discovering our own universe and beyond, it is our utmost dedication that we discover facts and information on everything around us. People have dedicated months, years, to discovering what truly makes us part of the universe, we have achieved and advanced so much just by studying our stars, our solar system and our neighbouring planets.

In Alan Lightman’s essay ‘’Our place in the Universe’’, his essay discusses about how humans throughout history have been able to figure out how distance has told us on how long it will take to travel in such amount of time to get to those wonders in the universe like in nature. However, since humans have been able to figure out how objects on earth like mountains are in distance from each other. But Lightman’s essay explains deeply on how distance on earth impacted our thought of distance in space. Lightman’s essay tells the reader how the ideas of distance on earth relates to the stars in space as to mother nature.

The best technology available today for studying the chemical composition of stars and planets is spectroscopy, a scientific tool that dissects light into its component colours (Astronomy mag. P.31). “A planet within 100 light-years of Earth is close enough to provide sufficient light for scientists to dissect light into its component colors” (Ray Villard, Astronomy ). Spectrographs are used by astronomers to observe discrete spectra. Discrete spectra are produced by gases, such as … when specific wavelengths of light are absorbed or emitted by the gases. This causes dark bands to appear on the spectrum where the specific wavelengths of light are absent. A scientist can

Understanding of the processes of stellar evolution came as a result of twentieth century advances in both astronomy and atomic physics. Advances in quantum theory and improved models of

It’s called the HR diagram because it tells about the life cycles of stars. By observing and looking at the life cycles of many other stars we can evaluate the date that will tell us all different stages of evolution and growth. While discovering luminosities this helped measure how much energy a star gives off as well as it’s colour that makes categorizing pretty spot on. Because of that a Danish astronomer research combied with russells research based on their spectral types this helped figure out there life cycle of the stars. Even though two women was behind it and it should be named after them but you know how it goes.

Astronomers study the planets, stars, and other celestial objects to try to understand how the universe works. They also study things like collisions, black holes and other things that could potentially affect earth. Astronomers gain information about objects in space from telescopes, and satellites. They can also use mathematical equations to find the positions of planets and stars in our universe. These telescopes and satellites observe light reflected by things such as planets, meteors, or stars in space and use it to make observations. Then the Astronomers job is to collect and analyze the data observed.

[27] Scientists can determine what a distant star is made of by looking at ____.

The craving of knowledge is something that has shaped the human race to what it is today. As humans, it's a necessity to have something to kindle a person’s flame of curiosity. Since the beginning of time, the world has always gazed up into the sky on a starry night and asked “what there is out there; what made this stunning view?”, “How immense is this vast expansion of space?”. These inquiries could be answered now that humans are capable of space exploration with the mechanization NASA and other space agencies have now, and will possibly take advantage of in upcoming years. The use of the stars has been very beneficial to humans, whether it’s navigation, religion, or something to spark the imaginations of many. The technology that astronauts

In this paper I will explain how astronomers determine the composition, temperature, speed, and rotation rate of distant objects using various methods. I will explain the properties of stars. I will also summarize the complete lifecycle of the Sun and determine where the Sun is currently in its lifecycle.

In inspiring people to have the passion in understanding the universal laws that govern us all, Professor Stephen Hawking reminds us on his speech for his 70th birthday to “remember to look up at the stars and not down at your feet” (enoch, 2012). Many scientists have been “looking up” and have discovered answers to the many questions that we have of the universe for ages. They have constructed theories, launched satellites, observed stellar phenomena, and even sent living beings in space to gain more understanding of the existence of everything. After centuries of research and observation, there are still some aspects of Astronomy that are still to be explored. One of them is the evolution of the Solar System, which is composed of the Sun and everything that travels around it. This includes eight planets and their natural satellites such as the Earth’s moon; dwarf planets such as Pluto and Ceres; asteroids; comets and meteoroids (Solar System Exploration, 2014). The Solar System is located in the Milky Way Galaxy, which is a part of a galactic group under the Virgo Supercluster. Figure 1 shows the location of our Solar System in the Universe. Many theories have been proposed on how the Solar System existed, but none has been completely successful. This spans from the time of the Ancient Greeks to the present 21st Century. As of now, the widely accepted theory is the Nebular Theory, which describes how the Solar System started as a large cloud of gas that contracted under

By looking at the different wavelengths or the spectrum of light from a celestial object, you can tell many of its properties and features. To do this, the Hubble Telescope is equipped with various scientific instruments. Each instrument used

     Stars are a marvelous wonder to many people, that is why some people spend most of their lives wondering what is “above the world so high” (Gardner 98). These people study and map the little twinkling stars in order to get a better meaning of them; they are astronomers. Great astronomers like Edwin Hubble, Immanuel Kant, and William Huggins, never stopped valuing the beauty of the stars. While they developed great astronomical principals. One astronomer who fits this mold most is, Edwin Powell Hubble. Wondering about what was

Once microwave radiation was discovered, studies improved on the Milky Way Galaxy. Its Doppler Shift can be used to map the motion of gas in it. Also, with radio telescopes, hydrogen gas can now be traced. When the Hubble Space Telescope was introduced in 1990, that made exploring space so much easier and more efficient. That’s how we discovered so much about our universe- including galaxies!

Since the beginning of recorded civilization, stars played a huge role in religion and proved vital to routing. The invention of the telescope, the discovery of the “laws of motion” and gravity in the 17th century prompted the

Ancient astronomers were able to differentiate between stars and planets, as stars remain relatively fixed over the centuries while planets will move an appreciable amount during a comparatively short time.