Twin Galaxies

How old is our universe really? For years there has been a race to discover the Solar System’s true age. For thousands of years, people have thought the Solar System and everything inside it to be created only several thousand years ago. Whereas many people now days have discovered that there is a considerable amount of evidence to suspect the Solar System is actually billions of years old. Fairly recent discovers have brought to light that there is also counter evidence to disprove the billion…

While most of the radiation emitted from a "normal" galaxy is in the form of visible light, like that of the radiation of ordinary stars, AGNs are prominent across the entire electromagnetic spectrum. Thus, astronomers needed to look beyond the visual regime to see their full potential. Recent technological advancements, such as satellite deployment, have enabled astronomers to explore energies once unattainable. In addition to the showing in a wide range of energies, AGNs also change in…

understand what are galaxies like in the universe. To start off, Edwin noticed a Cepheid variable in the Andromeda Nebula which is known to astronomers as M31. For Edwin to obtain his photographs, he used Mount Wilson 100-inch telescope. Once he found his variables and determined their periods and visible magnitudes, he used a technique which is called: “Leavitt’s period-luminosity…

Introduction Delphinus is a constellation that often passes by the watch of astronomers due to its limited size, however this little wonder has fascinating stars that captivate your attention when you take the time to focus upon it. Location South and away from the Milky Way's band lies the constellation Delphinus the Dolphin. This tiny grouping of stars lies in the transition zone from that of the summer star filled skies to that of the sparse autumn skies. Once you have located Delphinus…

If it was found out that other galaxies are not moving further, and further away from us quickly.. This would cause the Big Bang Theory too lose its credibility. Also if many other pieces of evidence were found out to be untrue , I believe this theory would lose much of its credibility. The first part of this theory, I will be discussing my main point, which is whether galaxies are moving away from us or not and at what speed. According to Hubble's law, the universe has been expanding since…

Ejnar Hertzsprung and Henry Norris Russel developed a vital tool used to study stellar evolution, a scatter graph that plots a star’s spectral type respective to their absolute magnitude, which is the observational Hertzsprung-Russel Diagram, or the temperature of stars relative to its luminosity, the theoretical H-R diagram. Stars have specific evolutionary stages based on their initial mass, dictating its internal structure and means of energy production. The phases in stellar evolution…

Hitching a Ride on a Light Beam Physics is the most fundamental of the sciences, undergirding astronomy, chemistry, geology, biology, and—absent some paradigm-shattering revelation—human thought and action. Its analytical methods and machines have plumbed the unknown and the inaccessible, from the submicroscopic confines of the atomic nucleus to the billowing expanse of the observable universe. Physics has superseded our biochemically mediated perceptions of the world, replacing qualitative…

Jupiter is the fifth planet out from the sun, and is the largest planet in our solar system. In addition, the planet is primarily made of gases, therefore it considered a “gas giant”. The 142,984 km planet’s atmosphere is made mostly of hydrogen and helium gas. Therefore, there is no solid ground on Jupiter, so the surface is considered the point where the atmospheric pressure is equal to that of Earth. The effective temperature, or “the temperature of an object calculated from the radiation it…

Testing the Validity of the Approach of Using Hydrogen and Helium Emission Spectra with the Rydberg Equation to Determine the Ionization Energy of Helium Michelle Plavnik Department of Chemistry, Emory University, Atlanta, GA, 30322, United States PAGE 2 ABSTRACT: The purpose of this lab is to determine how accurate the Rydberg equation is at modeling helium transitions and finding the ionization energy from those transitions. To accomplish this aim, the spectra of hydrogen and helium were…

The star outside your spaceship's windshield is a spectacular sight. HR 5171 A is a fireball 1,300 times larger than the Earth's sun. It's so big that if it were in our sun's position, it would swallow up Earth beneath its 10,000°F surface. To look at it from your spaceship, you have to wear special goggles--this star is almost a million times brighter than our sun. As you watch HR 5171A burn, you notice something strange. An object is peeking over the horizon, growing larger and larger. It's…