Wilmslow Guild Lecture 2008
... possible to establish absolute distances and the size our galaxy. Many astronomers were involved in this process, and the final shape and distribution emerged in the 1930’s. Our Galaxy has a lens-shaped spiral construction, 16,000 light years thick at the centre and 3,000 light years thick at the po ...
... possible to establish absolute distances and the size our galaxy. Many astronomers were involved in this process, and the final shape and distribution emerged in the 1930’s. Our Galaxy has a lens-shaped spiral construction, 16,000 light years thick at the centre and 3,000 light years thick at the po ...
Griffith Park Observatory
... o Coelostat and Solar Telescope-See solar flares and sunspots through one of three telescopes. 5. What are solar flares and sunspots and how do they affect Earth? ...
... o Coelostat and Solar Telescope-See solar flares and sunspots through one of three telescopes. 5. What are solar flares and sunspots and how do they affect Earth? ...
Light Phenomena Around Us
... Aurora Borealis by Lawrence Zeltser Aurora Borealis is such a beautiful sight. The Northern Lights are one of Earth’s greatest phenomena. The lights include a variation of intensity and color as well as it is very rare for it to occur. ...
... Aurora Borealis by Lawrence Zeltser Aurora Borealis is such a beautiful sight. The Northern Lights are one of Earth’s greatest phenomena. The lights include a variation of intensity and color as well as it is very rare for it to occur. ...
Astronomy
... than Pluto and takes 557 years to make a very skewed orbit of the Sun. Ceres is between Mars and Jupiter. Two other dwarf planets include Haumea and Makemake. The new definition of "planet": A body that circles the sun without being some other object's satellite, is large enough to be rounded by its ...
... than Pluto and takes 557 years to make a very skewed orbit of the Sun. Ceres is between Mars and Jupiter. Two other dwarf planets include Haumea and Makemake. The new definition of "planet": A body that circles the sun without being some other object's satellite, is large enough to be rounded by its ...
Stars - Stallion Science
... • If there isn’t enough mass – gravity will not be strong enough to stop the expansion • Just right amount of mass – the expansion will slow down but not end completely • Too much mass – gravity will overcome the expansion and the universe will start to contract (the big crunch), becoming very hot a ...
... • If there isn’t enough mass – gravity will not be strong enough to stop the expansion • Just right amount of mass – the expansion will slow down but not end completely • Too much mass – gravity will overcome the expansion and the universe will start to contract (the big crunch), becoming very hot a ...
The_Birth_of_a_Star
... • If the star is very large, it burns through the hydrogen quickly; helium fuses to make carbon, and as the helium is exhausted the collapse of the core generates enough energy to fuse the carbon forming iron. • Eventually the star collapses, as the electrons are trapped inside the core, forming ne ...
... • If the star is very large, it burns through the hydrogen quickly; helium fuses to make carbon, and as the helium is exhausted the collapse of the core generates enough energy to fuse the carbon forming iron. • Eventually the star collapses, as the electrons are trapped inside the core, forming ne ...
evidence found of solar system around nearby star
... report to be published Jan. 10 in The Astrophysical Journal. SETI chose Epsilon Eridani as one of the first targets in its long — but so far vain — search for signs of extraterrestrial intelligence in 1960. The suspected planets are too far away to be detected directly, so their presence has to be i ...
... report to be published Jan. 10 in The Astrophysical Journal. SETI chose Epsilon Eridani as one of the first targets in its long — but so far vain — search for signs of extraterrestrial intelligence in 1960. The suspected planets are too far away to be detected directly, so their presence has to be i ...
Dead Earth – Lesson 2 – Solar System
... helium & methane • Average Temp - 210 ℃ • Planet rotates on its side, with south pole facing Sun ...
... helium & methane • Average Temp - 210 ℃ • Planet rotates on its side, with south pole facing Sun ...
in my own words Astronomy at the Frontier Matt Mountain, Ph.D.
... We know that every star in our galaxy has at least one planet and that there are approximately 100 billion planets in our galaxy. Black holes are in the center of every galaxy. We have dark energy and dark matter. We know the age of the universe, and all this has happened in the last 20 years. It’s ...
... We know that every star in our galaxy has at least one planet and that there are approximately 100 billion planets in our galaxy. Black holes are in the center of every galaxy. We have dark energy and dark matter. We know the age of the universe, and all this has happened in the last 20 years. It’s ...
ASTRONOMY 5
... b) Although dark matter emits no visible light, it can be seen with radio telescopes, and such observations confirm that the halo of our Galaxy is full of this material. c) Theoretical models of galaxy formation suggest that a galaxy cannot form unless it has at least 10 times as much matter as we s ...
... b) Although dark matter emits no visible light, it can be seen with radio telescopes, and such observations confirm that the halo of our Galaxy is full of this material. c) Theoretical models of galaxy formation suggest that a galaxy cannot form unless it has at least 10 times as much matter as we s ...
Powerpoint Notes
... formed in space and began to move in relation to each other… Kepler’s Law 1. Planets are orbiting the Sun in the path of an ellipse. LAW OF ELLIPSES ...
... formed in space and began to move in relation to each other… Kepler’s Law 1. Planets are orbiting the Sun in the path of an ellipse. LAW OF ELLIPSES ...
Blue Marble in Empty Space
... indeed and are very difficult to see. Therefore, it’s hard to determine whether life has developed on them. Even with very strong telescopes, astronomers can rarely see the planet, never mind zoom in far enough to look for living organisms! However, methods are available to examine exoplanets. Ask t ...
... indeed and are very difficult to see. Therefore, it’s hard to determine whether life has developed on them. Even with very strong telescopes, astronomers can rarely see the planet, never mind zoom in far enough to look for living organisms! However, methods are available to examine exoplanets. Ask t ...
Scale of the universe Table 1
... Irregular galaxy 1039 - 1041 kg 108 - 1010 2 raisins (1 x 10-3 kg or 1 gram) ...
... Irregular galaxy 1039 - 1041 kg 108 - 1010 2 raisins (1 x 10-3 kg or 1 gram) ...
chap18_s05_probs
... ANSWER: You are given a density (the number of hydrogen atoms per volume) and asked to determine the total amount of mass within that volume. The volume is the volume of Earth. Given the definition of density, Density = total mass volume, rearrange this expression to get the total mass. Remember t ...
... ANSWER: You are given a density (the number of hydrogen atoms per volume) and asked to determine the total amount of mass within that volume. The volume is the volume of Earth. Given the definition of density, Density = total mass volume, rearrange this expression to get the total mass. Remember t ...
Chapter 1: part 2
... • Used by geographers as shorthand for all kinds of movement and flows involving human activity ...
... • Used by geographers as shorthand for all kinds of movement and flows involving human activity ...
Tools of Modern Astronomy:
... Read pages 784-790 in the textbook to find the answers to the question below. Use the back of this page or a sheet of binder paper if you need more room for the answers. 1. What did enslaved African Americans follow as they moved north to the Free States? What are constellations? 2. What are stars? ...
... Read pages 784-790 in the textbook to find the answers to the question below. Use the back of this page or a sheet of binder paper if you need more room for the answers. 1. What did enslaved African Americans follow as they moved north to the Free States? What are constellations? 2. What are stars? ...
Star - AUSD Blogs
... magnetic tape and the thousands of photographs we are carrying back to earth. Other scientists can interpret them as easily as I can, and I am not one who would condone that tampering with the truth which often gave my order a bad name in the olden days. The crew are already sufficiently depressed: ...
... magnetic tape and the thousands of photographs we are carrying back to earth. Other scientists can interpret them as easily as I can, and I am not one who would condone that tampering with the truth which often gave my order a bad name in the olden days. The crew are already sufficiently depressed: ...
The Sun and Other Stars
... 0.7% of mass is converted into energy when hydrogen becomes helium; fusion occurs only in the core, not outer areas. • Our sun contains 8.9 x 1056 hydrogen atoms, and fuses 3.7 x 1038 every second! • This results in 4 million metric tons of matter being converted into energy every second! • Larger s ...
... 0.7% of mass is converted into energy when hydrogen becomes helium; fusion occurs only in the core, not outer areas. • Our sun contains 8.9 x 1056 hydrogen atoms, and fuses 3.7 x 1038 every second! • This results in 4 million metric tons of matter being converted into energy every second! • Larger s ...
Lecture 35. Habitable Zones.
... Soon, all the water will be in the atmosphere, which will be very hot. Hot enough (several hundred degrees) to vaporize carbonate rock. ...
... Soon, all the water will be in the atmosphere, which will be very hot. Hot enough (several hundred degrees) to vaporize carbonate rock. ...
5th Grade Astronomy Test Study Guide
... Comets: a space object made of ice and dust that orbits a star and develops a long bright tail as it nears its star Gravity: the force that pulls all objects towards each other Gravitational Pull: when gravity attracts two objects together Seasons: a period of the year that has special climate condi ...
... Comets: a space object made of ice and dust that orbits a star and develops a long bright tail as it nears its star Gravity: the force that pulls all objects towards each other Gravitational Pull: when gravity attracts two objects together Seasons: a period of the year that has special climate condi ...
Sample Exam 3
... C) supernovae Ia events last longer than Cepheids. D) the periods of Cepheid stars are too long to observe in distant galaxies. 24) The Hubble Space Telescope has been used to observe supernova type Ia in distant galaxies, to measure the distance using the brightness law—independent of the velocity ...
... C) supernovae Ia events last longer than Cepheids. D) the periods of Cepheid stars are too long to observe in distant galaxies. 24) The Hubble Space Telescope has been used to observe supernova type Ia in distant galaxies, to measure the distance using the brightness law—independent of the velocity ...
Outer space
Outer space, or just space, is the void that exists between celestial bodies, including the Earth. It is not completely empty, but consists of a hard vacuum containing a low density of particles, predominantly a plasma of hydrogen and helium as well as electromagnetic radiation, magnetic fields, neutrinos, dust and cosmic rays. The baseline temperature, as set by the background radiation from the Big Bang, is 2.7 kelvin (K). Plasma with a number density of less than one hydrogen atom per cubic metre and a temperature of millions of kelvin in the space between galaxies accounts for most of the baryonic (ordinary) matter in outer space; local concentrations have condensed into stars and galaxies. In most galaxies, observations provide evidence that 90% of the mass is in an unknown form, called dark matter, which interacts with other matter through gravitational but not electromagnetic forces. Data indicates that the majority of the mass-energy in the observable Universe is a poorly understood vacuum energy of space which astronomers label dark energy. Intergalactic space takes up most of the volume of the Universe, but even galaxies and star systems consist almost entirely of empty space.There is no firm boundary where space begins. However the Kármán line, at an altitude of 100 km (62 mi) above sea level, is conventionally used as the start of outer space in space treaties and for aerospace records keeping. The framework for international space law was established by the Outer Space Treaty, which was passed by the United Nations in 1967. This treaty precludes any claims of national sovereignty and permits all states to freely explore outer space. Despite the drafting of UN resolutions for the peaceful uses of outer space, anti-satellite weapons have been tested in Earth orbit.Humans began the physical exploration of space during the 20th century with the advent of high-altitude balloon flights, followed by manned rocket launches. Earth orbit was first achieved by Yuri Gagarin of the Soviet Union in 1961 and unmanned spacecraft have since reached all of the known planets in the Solar System. Due to the high cost of getting into space, manned spaceflight has been limited to low Earth orbit and the Moon.Outer space represents a challenging environment for human exploration because of the dual hazards of vacuum and radiation. Microgravity also has a negative effect on human physiology that causes both muscle atrophy and bone loss. In addition to these health and environmental issues, the economic cost of putting objects, including humans, into space is high.