Mass of the Milky Way is 5.8×1011 solar masses (Mo). Sun's distance to Galactic center is 26,000 light years. Sun's Galactic rotation period is 220 million years. Escape velocity at Sun's position is 550 km/s.This step, stars will be investigated.The globular clusters in the Milky Way have proven through this century to be irreplaceable objects in an amazingly wide range of astrophysical studies. (Harris, 1996).
Every planet that you see has received significant amounts of research and study and we are benefiting from hundreds of thousands of man-hours of observational work and probably upwards of a billion dollars of NASA funding (mostly devoted to the Kepler Space Telescope). The exciting results that you will manipulate and see in this Lab are cutting-edge and completely unknown a generation ago, even though people have been wondering about these questions for millennia. The goal of the Lab is to place all known exoplanetary systems into a few different populations or categories and to identify any interesting exceptions. Let’s define a “population” as a set of planetary systems that have similar physical (planet masses, radii, densities, etc.) and orbital (number of planets, semi-major axes, eccentricities, spacing between planets, etc.)
The first telescope was used by Italian Galileo in sixteen hundred and nine; Galileo was able to make out a few fuzzy crates on the moon’s surface. For many centuries after that humans improved on telescopes, building bigger and better telescopes. But eventually building bigger and better telescopes no longer improved our view. Earth’s atmosphere would always distort light, or bend the light rays astronomers could see. The earth’s atmosphere was limiting how far we could see into space, so astronomers decided to bypass the atmosphere.
Life Cycle of a Star Pamela Hughes May 17, 2011 SCI/151 Norman Stradleigh Life Cycle of a Star On a clear dark night, one can see thousands of stars. We can see many stars but could never dream of being able to count them all. Even though each individual star is unique, all stars share much in common. The Sun, which is the source of virtually all light, heat, and energy reaching the Earth, is the nearest star. Today, we know that stars are born from interstellar gas clouds, shine by nuclear fusion and then die, sometimes in dramatic ways.
No other moon orbits closer to its planet. Phobos’ greatest feature is a large crater which is 10 kilometers wide. It is almost half the width of the moon and was named Stickney which is Angelina’s maiden name. Phobos orbits Mars three times a day and is slowly moving closer to the moon. Phobos will eventually crash into Mars or break up and form a ring around the planet.
Astronomers detected the alien world as it passed in front of its sun, a red dwarf star 40 light years away in a constellation called Ophiuchus, after the Greek for "snake holder". The discovery, made with a network of amateur telescopes, is being hailed as a major step forward in the search for planets beyond our solar system that are hospitable to life as we know it. Measurements suggest the planet is shrouded in a thick atmosphere of hydrogen and helium that blocks visible light from its sun, plunging the watery surface into permanent darkness. The weight of the atmosphere keeps the water liquid despite it being a searing 120C to 282C. Writing in the journal Nature, David Charbonneau at the Harvard-Smithsonian Centre for Astrophysics describes how his team used a suite of eight amateur-sized telescopes to spot the planet as it moved across the face of its star, which is less than 0.5% as bright as our own sun.
Telescopes helped discover many new planets and asteroids which ultimately led to the theory of the speed of light, Telescopes have helped astronomers understand gravity and its role on the Earth (Mason, 2008). With further viewing from the telescope it also showed us that light here on earth radiates from our Sun and all the other stars in our universe. Had we not have had the telescopes we would still be very behind on research of all the planets which are not accessible by any human or machine to this day. In the very early ages of human life the earth and world was viewed much differently mainly ruled by religion and the views of religion. People were less educated and much easier to be controlled.
Space has thousands of millions unexplored galaxies that could have the resources that we need to survive. Just imagine a planet full of water or coal Space Technology is the answer to our survival. 2, When NASA travels to space, we always get way more back then we put in and not just in dollars and cents. There have been many arguments towards wasting too much money on space technology when we should be spending it here on Earth. Why?
The reason why calculating stars distance is difficult because the earth’s revolution around the sun stars shifts their position. To overcome these challenges, an international team of astronomers, led by Hervé Bouy from the Max Planck Institute, Garching, Germany and the Observatoire de Grenoble, France, were able for the first time measure the mass of an ultra-cool brown dwarf star. The team performed the measurements using four of the most powerful telescopes available. That was the first-ever mass measurement of an L-type star belonging to the new stellar class of very low-mass stars, discovered a few years ago. With a mass of 6.6% of the solar mass, this celestial object is observed to be lying between stars and planets in the evolutionary scheme.
(Dr. Barbara Mattson, 28-Dec-2010) A star cluster or star clouds are groups of stars. Star clusters can be distinguished as global clusters, which are roughly spherical groupings of from10, 000 to several million stars packed into regions of from 10 to 30 light years across. They commonly consist of very old Population II stars—just a few hundred million years younger than the universe itself—which are mostly yellow and red, with mass just less than two solar masses. Such stars predominate within clusters because hotter and more massive stars have exploded as supernovae, or evolved through planetary nebula phases to end as white dwarfs. Open clusters are very different from globular clusters.