Andromeda Galaxy

In the early 1900s, Henrietta Leavitt was studying Cepheids in the Large Magellanic Cloud (the small satellite galaxy of the Milky Way) and found a relationship between their period and luminosity. This meant that, simply by measuring the period of a more distant Cepheid, astronomers could immediately determine its luminosity – and hence, its distance. How We Use Cepheids Astronomers use Cepheid stars to measure distance. First, the period of a distant Cepheid is measured. The period is the length

Mayall’s object (also known as Arp 148) is the stunning result of an encounter between two galaxies resulting in a ring-shaped galaxy and a long-tailed companion, located almost 465 million light-years away within the constellation Ursa Major. The pair extends across 80 thousand light-years. The collision between the two parent galaxies produced a shockwave effect that first drew matter into the center and then caused it to propagate outwards in a ring. The elongated companion perpendicular to the

universe that affects the gravitation and mass of varying objects, such as stars and galaxies. Dark matter is hard to see and find because unlike matter, it does not reflect or emit light. It also does not affect the electromagnetic fields in the universe (CERN 1). Dark matter can either be “hot” or “cold.” “Cold” dark matter means when the big bang occurred it was not moving fast enough to affect the formation of galaxies. Dark matter can also be “hot,” meaning it was moving fast enough to affect a galaxy’s

to find out how they affect us now and in the future, in order to help my reader understand I will explain how a black hole works, which will be useful to understanding how they can be used for space travel and how they are in the center of every galaxy. Black holes are the mystery of our cosmological universe. They have been baffling even the greatest scientists like Stephen Hawking for many years and yet not many people know about them. To understand how black holes are confusing scientists and

This galaxy is home to supernova SN 2006gy, which was a supernova that was spotted in 2006. This supernova was the second brightest object in the observable universe (constellation-guide.com). There is a cluster of galaxies in the Perseus constellation called the “Perseus Cluster.” This cluster is home to thousands of galaxies and one the most massive objects known in the universe. This cluster of galaxies is moving away from us at the rate of 5366 kilometers

Why Can't the Eye See Objects at a Distance? While human eyes do have the ability to see for long distances, most of it will appear to be a tiny point in the sky. For example, humans can see the Andromeda Galaxy, which is more than 2.5 million light years away, but even in a massive galaxy like Andromeda, it appears as a tiny point in the sky to the naked eye. As an object gets further away, the harder will be to see, but that is why telescopes have proven an invaluable tool for exploring the known

looking at something in space that is far away, we are seeing what it looked like long ago. For example, Andromeda Galaxy is about 2.5 million light-years from Earth, so, when looking at that galaxy we see it as it was 2.5 million years ago because thats how long it takes the light to reach us here on Earth. The solar system was formed by an early generation of stars that cover 2% of our galaxies hydrogen and helium into heavier elements. the cloud that formed our solar system and the 2% of different

The Milky Way There are galaxies like between 300 billion and 500 billion in the space. One of them is the Milky Way. The first time Democritus explored the Milky Way in 450 - 370 B.C. Democritus thought that the Milky Way is composed the hundreds of stars. Then Aristo researched the Milky Way. Aristo's ideas about the Milky Way were token shape with combustion of stars. Then Ibn-i Heysem, Ibn Bacce, Ibn Kayyim El Cevziyye explored the Milky Way. The first time Galileo Galile explored with a telescope

a radio galaxy, and one of the strongest radio sources in the sky. It was discovered byGrote Reber in 1939. In 1951, Cygnus A, along with Cassiopeia A, and Puppis A were the first "radio stars" identified with an optical source. Of these, Cygnus A became the first radio galaxy; the other two being nebulae inside the Milky Way.[3] In 1953 Roger Jennison and M K Das Gupta showed it to be a double source.[4] Like all radio galaxies, it contains an active galactic nucleus. Images of the galaxy in the

Investigation of Dark Matter Introduction Throughout the years, scientists have been looking for the missing mass of the universe; it has yet remained an unsolved mystery. Using different methods, scientists have tried to determine the mass of the universe and surprisingly found a discrepancy suggesting that ninety percent of the mass of the universe is nowhere to be found. Then here comes the term “dark matter”, referring to this unfound matter of the universe