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The Melbourne Solar System Trail
The Melbourne Solar System Trail

... planets sim ply by following the bike and walking trail on the foreshore of the City of Port Phillip. In 2008 artists and scientists constructed a m odel of our Solar System to a scale of one to one billion between St Kilda and Port Melbourne. So instead of navigating 5.9 billion kilom etres from th ...
The Sun and Beyond - Valhalla High School
The Sun and Beyond - Valhalla High School

...  Can be classified according to the Hertzsprung-Russel Diagram (our sun is a typical star)  Energy produced by the nuclear fusion of 2 hydrogen atoms to helium  Takes 27 days to rotate ...
Document
Document

... – Predict what will happen accurately. – Or, predict what can be seen before one thinks to look. ...
Space Study Guide
Space Study Guide

... As technology increased, scientists made more and more observations that supported the Big Bang Model. 1. In 1929, Edwin Hubble observed that the spectral lines from other galaxies tended to always shift toward the red end of the spectrum. According to the Doppler Effect, causes this change of obser ...
Ch. 5 The Universe and Solar System
Ch. 5 The Universe and Solar System

... • Like other stars, complex processes in the sun produce other elements. • H & He combine to form other heavier atoms. • Does this under high pressure and temperature. • More than 60 elements have been identified in the sun’s gases. • 75% of the sun’s mass is H, 24% is He, the rest is made up of oth ...
Unit 1: The Big Picture
Unit 1: The Big Picture

... 4 sec-temp too low for converting energy into matter, too high to form atoms 3 minutes – nuclei can form – 25% helium nuclei, 75% hydrogen nuclei w/ small amounts of lithium and boron nuclei ...
astronomy - Mr. Barnard
astronomy - Mr. Barnard

... __2__7. The Milky Way galaxy is best described as (1)a constellation visible to everyone on Earth (2)a spiral-shaped formation composed of billions of stars (3)a region in space between the orbits of Mars and Jupiter (4)a type of solar system ...
Our Place in Space
Our Place in Space

... as we know it is the only planet where life exists. Mars - This planet is the most similar to earth as it also has different days and seasons but it would not be suitable for humans as there is very little oxygen. Jupiter - This is the largest planet in our solar system and has 18 moons. Saturn - Sa ...
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... time = distance / velocity = 7 Mpc/(0.508 Mpc/Gyr) ...
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Take Home #2 Complete the following on your own paper. Do not
Take Home #2 Complete the following on your own paper. Do not

... A. Models will probably stay the same because scientists do not enjoy creating new models. B. Models will probably stay the same because scientists have learned all there is to know about the life cycle of stars. C. Models will probably change because scientists like to make changes. D. Models will ...
Space - Logan Petlak
Space - Logan Petlak

... • Nebula – a cloud of gas and dust in outer space, visible in the night sky either as an indistinct bright patch or as a dark silhouette against other luminous matter. ...
22. AQA P1 Doppler Effect and Red Shift Answers
22. AQA P1 Doppler Effect and Red Shift Answers

... spectrum (compared to the sun). [1] Don’t talk in terms of red light and if you say red shift, you must Wavelengths seem to increase. [1] explain what that means. Galaxies are moving away from the Earth. [1] Far away galaxy is moving faster than near galaxy or near galaxy is moving away more slowly ...
Our Solar System Formation
Our Solar System Formation

... there was much more material in the areas where they form compared to the rock planets. Where gas giants are formed there is rocky solid material and much more gas. The rocky material first accretes solid material to become planetesimals and then with its gravity it will collect the gasses around m ...
Introduction to Space
Introduction to Space

... ~Venus is the brightest object in the sky after the Sun and moon, and is usually visible just before sunrise or after sunset as a bright “star” low in the sky ~Mars, Jupiter and Saturn are also easily visible to the unaided eyes (without telescope), and Mercury is visible as well, although it is muc ...
Satellites - Deans Community High School
Satellites - Deans Community High School

...  1. Describe the range of heights and functions of satellites in orbit around the earth, including geostationary and natural satellites.  2. Describe the dependence of period of orbit on height.  3. Describe the use of parabolic reflectors to send and receive signals.  4. Carry out calculations ...
Unit XII Study Guide
Unit XII Study Guide

... d. velocity. ____ 29. Much of the mass of the universe may be composed of a. electromagnetic waves. c. background radiation. b. cosmic microwaves. d. dark matter. Completion Complete each sentence or statement. 30. Because Earth’s orbit around the sun is an ellipse, and Earth is not always the same ...
Science Success Academy
Science Success Academy

... 3. Why do the positions of the moon, stars, and planets change in the night sky? ...
The wonders of our universe
The wonders of our universe

... The Earth is part of our solar system. At the centre of this is the sun, which is the solar system’s star. Our solar system consists of the sun and objects connected to it by gravity – eight planets and some moons. The four smaller planets, Mercury, Venus, Earth, and Mars, are made of rock and metal ...
Revealing the nature of dark energy
Revealing the nature of dark energy

... Missing energy: Dark Energy (energy that is not matter) Missing matter: Dark Matter (matter that doesn’t shine) ...
print version
print version

... All rotate in the same direction (moons + sun too) Exceptions = Venus, Uranus, & Pluto rotate slowly clockwise Rotation of sun, planets, & their moons is all in the same direction ...
HERE - physicsisphun.org
HERE - physicsisphun.org

... Balance of forces in a Star •The inward force of gravitational pull is balanced with the outward force of the energy of nuclear fusion in the center of the sun. •Estimates are that this balance of forces on the Sun has existed for 5 billion years and should continue for another 5 ...
MST Review DQ Week 5 - Biloxi Public Schools
MST Review DQ Week 5 - Biloxi Public Schools

... B. The probe will undergo constant acceleration until a force acts on it. C. The probe will continue on its current path until an unbalanced force acts on it. D. The force that makes the probe move through space is equal to its mass divided by its velocity. Justification--___________________________ ...
DOCX
DOCX

... heavenly luminaries (sun, moon, and stars) rotate daily around Polaris. There is no "outer space". The centre of the earth plane is the north pole and the Rupes Nigra or Mount Meru; and outer edge is Antarctica and the ice wall. There is no south pole. The sun and moon are the same size, each about ...
Astronomy
Astronomy

... • Photosphere – inner layer of the Sun’s atmosphere that gives off light • Chromosphere - middle layer of the Sun’s atmosphere that can be seen during an eclipse; has a distinctive red color • Corona – outer layer of the Sun’s ...
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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.
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