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Study Island Copyright © 2012 Study Island
Study Island Copyright © 2012 Study Island

... Earth's Moon currently has a deep ocean of liquid water. There is no evidence of liquid water on Earth's Moon. There is evidence that the Moon had the same amount of liquid water as Mars in the past. ...
Astro 1 Levine Homework Solar System
Astro 1 Levine Homework Solar System

... 2. Why isn’t Pluto a planet? What is the one key thing that causes it to be classified as a dwarf planet rather than a planet? The key thing that caused Pluto to be reclassified as a dwarf planet is that it failed to clear it's orbit -- there are many other Kuiper Belt objects orbiting in the same g ...
EMS, HR, Star Lives classwork/homework
EMS, HR, Star Lives classwork/homework

... 18. When a star begins to run out of fuel, what two types of stars can it become? 19. What happens to small and medium stars when they run out of fuel? ...
Gravitation and Orbital Motion
Gravitation and Orbital Motion

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... mantle, outer and inner core. ...
PowerPoint Presentation - Planetary Configurations
PowerPoint Presentation - Planetary Configurations

...  Terrain on the Moon  Discovered satellites of Jupiter – a mini-solar system  Observed motion of sunspots implying rotation of the Sun  Observed phases of Venus that confirmed a prediction of the heliocentric model ...
1. For most of human history it was believed that Earth was at the
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Supervised by

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The Earth in the Universe (solucionario)

... Distances in the Universe How long is alpha Centaury from the Sun ...
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... • You need “metals” to make planets –Metals are elements heavier in mass than helium ...
exercise 1
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Fun Fact: Venus rotates backward compared with mist other planets

... The Sun The sun is in the center of the solar system. It is also, the biggest object in the solar system. The sun is one of the many, many stars in the universe. ...
Gravity - MsAskins
Gravity - MsAskins

... What keeps objects in orbit in the solar system? • Inertia is the tendency of an object to resist a change in motion. • The greater an object’s mass, the greater its inertia. • Newton’s first law of motion says that an object at rest will stay at rest and an object in motion will stay in motion with ...
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... model. He discovered four satellites (moons) orbiting Jupiter, which are called the Galilean Moons. He lived the last years of his life under house arrest. ...
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... The Earth is 93,000,000 miles from the sun. We orbit the sun. It takes 365 and a ¼ days to orbit the sun. To be precise 365.256366 days. Every 4 years we get a leap day to make up for the forth day. Our distance from the sun makes Earth perfect for life. ...
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... sun is up, for example, "my cat sleeps all day", or it might mean an entire 24-hour period, usually counted starting from midnight. The opposite of day is night. ...
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... the solar system ensures that students understand the vastness of our solar system and the different sizes of the planets. The order of planets from the sun is easily remembered with this mnemonic: My Very Excellent Mother Just Served Us Nachos (Please used to stand for Pluto). The first four planet ...
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Introduction Worksheet 1

... Astronomical observations indicate that the sun is tracing a circular orbit around the center of our galaxy. The radius of orbit is 2.7 x 1020 m with period T = 200 million years. a) Calculate the total mass of the central stars. b) Assume all of these stars have the same mass as our sun. How many d ...
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History of Astronomy

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No Spring Picnic on Neptune

... the southern hemisphere tips toward the Sun, it receives more sunlight than the northern hemisphere. That means it’s summer in the south and winter in the north. The opposite is true when the northern hemisphere is tilted toward the Sun. The north receives more sunlight, which means it’s summertime ...
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What is Astrobiology?

... stars within the Milky Way Galaxy.11 billion of these estimated planets may be orbiting sun-like stars. ...
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Unit 2 - Astronomy

... smaller diameters and higher densities that are close to the Sun ...
Earth Science Curriculum Unit 1 Maps and Measurements
Earth Science Curriculum Unit 1 Maps and Measurements

... HSN.Q.A.1: Use units as a way to understand problems and to guide the solution of multistep problems; choose and interpret units consistently in formulas; choose and interpret the scale and the origin in graphs and data displays. HSN.Q.A.2: Define appropriate quantities for the purpose of descriptiv ...
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Formation and evolution of the Solar System



The formation of the Solar System began 4.6 billion years ago with the gravitational collapse of a small part of a giant molecular cloud. Most of the collapsing mass collected in the center, forming the Sun, while the rest flattened into a protoplanetary disk out of which the planets, moons, asteroids, and other small Solar System bodies formed.This widely accepted model, known as the nebular hypothesis, was first developed in the 18th century by Emanuel Swedenborg, Immanuel Kant, and Pierre-Simon Laplace. Its subsequent development has interwoven a variety of scientific disciplines including astronomy, physics, geology, and planetary science. Since the dawn of the space age in the 1950s and the discovery of extrasolar planets in the 1990s, the model has been both challenged and refined to account for new observations.The Solar System has evolved considerably since its initial formation. Many moons have formed from circling discs of gas and dust around their parent planets, while other moons are thought to have formed independently and later been captured by their planets. Still others, such as the Moon, may be the result of giant collisions. Collisions between bodies have occurred continually up to the present day and have been central to the evolution of the Solar System. The positions of the planets often shifted due to gravitational interactions. This planetary migration is now thought to have been responsible for much of the Solar System's early evolution.In roughly 5 billion years, the Sun will cool and expand outward many times its current diameter (becoming a red giant), before casting off its outer layers as a planetary nebula and leaving behind a stellar remnant known as a white dwarf. In the far distant future, the gravity of passing stars will gradually reduce the Sun's retinue of planets. Some planets will be destroyed, others ejected into interstellar space. Ultimately, over the course of tens of billions of years, it is likely that the Sun will be left with none of the original bodies in orbit around it.
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