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Notes
Notes

... B. Everything ______________ around the Sun C. Planets and distant stars are visible in the _________________ D. Earth is part of ______________________ E. _________________________ holds the solar system together 1. We usually think of gravity as the ____________________ that pulls us to the Earth. ...
Solar System
Solar System

... • Our solar system consists of nine planets orbiting around one sun. • Measurement in space: 1 astronomical unit (AU) = 150 million kilometers. ...
Topic 3 – Waves and the Universe
Topic 3 – Waves and the Universe

... started out as a tiny point of concentrated energy about 13.5 billion years ago The Universe expanded from this point and is still expanding The theory also claims that a huge amount of radiation was left behind after the Big bang Steady State theory: This alternative theory proposed in 1948 suggest ...
Topic 3 notes - WordPress.com
Topic 3 notes - WordPress.com

... started out as a tiny point of concentrated energy about 13.5 billion years ago The Universe expanded from this point and is still expanding The theory also claims that a huge amount of radiation was left behind after the Big bang Steady State theory: This alternative theory proposed in 1948 suggest ...
Glossary File - Griffith Observatory
Glossary File - Griffith Observatory

... atom – a basic unit of matter. The simplest building block of the universe, an atom has a nucleus containing protons and neutrons and a cloud of electrons that surrounds the nucleus. comet – a small, icy object from the outer part of the solar system. Comets form tails as they approach the Sun and b ...
Name Period ______ Astronomy Unit Study Guide 1. _____
Name Period ______ Astronomy Unit Study Guide 1. _____

... G. a pattern of stars in the sky H. Greek astronomer who developed a geocentric model of planetary motion I. the idea that the earth is the center of the universe J. he developed a law that other galaxies are moving away from us ...
Solar System knowledge
Solar System knowledge

... The origin of the Sun and of the Solar System is connected to the condensation of a primordial cloud of gas and dust as those often seen in our galaxy. It is probable that an external event triggered the collapse of the cloud, since its parts were in equilibrium. Scientists have put forward the hypo ...
Here
Here

... Energy. • As the universe expanded, it cooled. This allowed the first subatomic particles to form (protons, neutron, electrons). • The simplest elements were the first to form. Hydrogen and helium. The fuel for STARS! ...
Appendix 2
Appendix 2

... A brief history of the cosmos. Telescopes - such as the Hubble telescope - show we are surrounded by millions of galaxies. Observation shows that overall movement of the galaxies is to move away from each other. The speed of any two galaxies is greater the further they are apart. This is understood ...
PDF
PDF

... Solar System. Sphere. ...
Study guide for Space Unit Key
Study guide for Space Unit Key

... 14. What is a satellite? What is a natural satellite? Any body that orbits a larger body is a satellite. Natural satellites are not manmade. Our moon is an example of a natural satellite. 15. What holds objects together in space and enables planets to have atmospheres? Gravity 16. Why do Scientists ...
mechanical
mechanical

... •Rotating magnetic field •Magnetometer ...
Science Curriculum Map
Science Curriculum Map

... (C) relate position of the Moon and Sun to their effect on ocean tides. 8.8 Earth and space. The student knows characteristics of the universe. The student is expected to: (A) describe components of the universe, including stars, nebulae, and galaxies, and use models such as the Herztsprung-Russell ...
Lecture 1 outline handout
Lecture 1 outline handout

... Lecture: Deep Space & Deep Time 1. Range of space and time A. electrons to Universe B. microseconds (1/1,000,000 sec. ) to age of Universe (~14,000,000,000 years) 2. Units of measure A. metric system B. units of mass (M), length (L), time (T) C. converting english to metric (1 km = 0.6 mi; 1 mi = 1. ...
Inner Planets
Inner Planets

... about 70% hydrogen and 28% helium. ...
Research - Clarion University
Research - Clarion University

... Astronomy Research might accompany her to obtain more measurements. ...
2.5.8 the future of the universe
2.5.8 the future of the universe

...  To ...
Space_Exploration_(21)_notes
Space_Exploration_(21)_notes

... 2. Light travels very fast, but the distances in space are so great that it takes ______________ for the light to reach Earth.-sometimes tens of thousands of years. 3. The light and other energy leaving a star are forms of _____________________. 4. Remember: radiation is energy transmitted through _ ...
Home Sweet Home
Home Sweet Home

... Two astronauts working on the ISS truss ...
Space Intro
Space Intro

... Two astronauts working on the ISS truss ...
Year 7 Gravity and Space
Year 7 Gravity and Space

... The speed and direction of galaxies can be measured using light. It show that the Universe is expanding ...
Earth and Space Science - science
Earth and Space Science - science

... b) It takes the moon 30 days to make 1 full orbit around the earth ...
19.3 Notes
19.3 Notes

... Planetesimals that remained in the nebular disk formed the ______________ belt beyond the orbit of Neptune. ___________ may simply be the largest object in this belt. ...
The Big Bang
The Big Bang

... Expansion of the Universe • In 1929 Edwin Hubble found link between distances to galaxies and their radial velocities • Plot Hubble's data ...
Bodies of our Solar System
Bodies of our Solar System

... • Small pieces of rocks flying through space with no particular path are called Meteoroids • Can be small as a grain as sand, or large as a car ...
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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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