the SUN
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The Sun is currently experiencing an unusually quiet solar minimum, with over 200 days so far this year having no observed sunspots. The solar wind has also reached its lowest levels in 50 years. Scientists are monitoring the Sun closely with telescopes and satellites but are uncertain what significance this unusual calm activity may have.
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3) The Sun is powered by nuclear fusion in its core, which converts hydrogen into helium and releases energy. This process maintains hydrostatic equilibrium between gravity and radiation pressure.
6.sun
The Sun is a normal G2 star that contains over 99% of the mass in the Solar System. It has a diameter of 1.39 million km and a surface temperature of 5,800 K. Energy is created in the Sun's core through nuclear fusion and radiates outward through convection and radiation zones to the surface. The Sun's 11-year activity cycle causes variations in sunspots, flares, and other magnetic phenomena. In the future, the Sun will expand into a red giant after exhausting its hydrogen fuel supply over many billions of years.
6.Sun.ppt
The Sun is a normal G2 star that contains over 99% of the mass in the Solar System. It has a diameter of 1.39 million km and a surface temperature of 5,800 K. Energy is created in the Sun's core through nuclear fusion and radiates outward through convection and radiation zones to the surface. The Sun's 11-year activity cycle causes variations in sunspots, flares, and other magnetic phenomena. In the future, the Sun will expand into a red giant after exhausting its hydrogen fuel supply over many billions of years.
The moon
The Moon is Earth's only natural satellite. It formed nearly 4.5 billion years ago from debris after a giant impact between Earth and a Mars-sized body. The Moon is in synchronous rotation with Earth and has prominent dark maria and impact craters visible from its near side. It has significant cultural influence through its regular cycle of phases and prominence in the night sky.
Solar System Formation/Sun/Comets/Meteors
The document summarizes theories about how our solar system formed from a collapsing cloud of gas and dust. It describes how:
1) Our solar system likely began from a giant interstellar cloud that collapsed under gravity and formed a rotating disk, with a dense center that became the Sun and a surrounding disk that formed the planets.
2) The solar nebula disk varied in temperature by distance from the Sun, allowing different elements to condense into planetary cores near and far from the Sun, forming the terrestrial and gas giant planets.
3) Asteroids and comets are remnants from solar system formation and provide clues about its early history through observations and analysis of their composition and orbits.
Earth and Space
The document summarizes key concepts about the solar system, including:
- The solar system is made up of the sun and eight planets that orbit around it, along with moons, asteroids, and comets.
- The earth spins on its axis, causing day and night, and its tilt and orbit around the sun cause the seasons in the northern and southern hemispheres.
- Nuclear fusion in the sun's core converts hydrogen to helium, releasing enormous amounts of energy that allow it to shine.
Sun nn
1) The document provides 10 facts about the planets and sun, including that the sun rotates once every 27 days and will continue shining for at least another 5 billion years.
2) Mercury is the innermost and smallest planet and orbits the sun once every 88 Earth days.
3) Venus is known as Earth's twin sister due to its similar size and proximity to Earth, and its atmosphere is mostly carbon dioxide.
Stars and the solar system
The document discusses various topics related to stars and our solar system. It describes the Milky Way galaxy as a spiral galaxy containing about 200 billion stars. It explains that stars appear as dots due to their immense distance from Earth, and lists the Sun and Proxima Centauri as the closest stars. It also discusses the pole star, constellations, phases of the Moon, planets in our solar system including Mercury, Venus, Earth, Mars, Jupiter and Saturn, and characteristics of the Sun.
About earth.ppt
Planets .. description ..earth..it's moon..rotation..all about Earth.. rotation revolution axis..surface .. temperature ..pressurePlanets .. description ..earth..it's moon..rotation..all about Earth.. rotation revolution axis..surface .. temperature ..pressurePlanets .. description ..earth..it's moon..rotation..all about Earth.. rotation revolution Planets .. description ..earth..it's moon..rotation..all about Earth.. rotation revolution axis..surface .. temperature ..pressure .Planets .. description ..earth..it's moon..rotation..all about Earth.. rotation revolution axis..surface .. Planets .. description ..earth..it's moon..rotation..all about Earth.. rotation revolution axis..surface .. temperature ..pressurePlanets .. description ..earth..it's moon..rotation..all about Earth.. rotation revolution axis..surface .. temperature ..pressurePlanets .. description ..earth..it's moon..rotation..all about Earth.. rotation revolution Planets .. description ..earth..it's moon..rotation..all about Earth.. rotation revolution axis..surface .. temperature ..pressure .Planets .. description ..earth..it's moon..rotation..all about Earth.. rotation revolution axis..surface .. temperature ..pressure temperature ..pressure ..pressure temperature Planets .. description ..earth..it's moon..rotation..all about Earth.. rotation revolution axis..surface .. temperature ..pressurePlanets .. description ..earth..it's moon..rotation..all about Earth.. rotation revolution axis..surface .. temperature ..pressurePlanets .. description ..earth..it's moon..rotation..all about Earth.. rotation revolution Planets .. description ..earth..it's moon..rotation..all about Earth.. rotation revolution axis..surface .. temperature ..pressure .Planets .. description ..earth..it's moon..rotation..all about Earth.. rotation revolution axis..surface .. temperature ..pressure temperature ..pressure.pressurePlanets .. description ..earth..it's moon..rotation..all about Earth.. rotation revolution axis..surface .. temperature ..pressurePlanets .. description ..earth..it's moon..rotation..all about Earth.. rotation revolution axis..surface .. temperature ..pressurePlanets .. description ..earth..it's moon..rotation..all about Earth.. rotation revolution Planets .. description ..earth..it's moon..rotation..all about Earth.. rotation revolution axis..surface .. temperature ..pressure .Planets .. description ..earth..it's moon..rotation..all about Earth.. rotation revolution axis..surface .. temperature ..Planets .. description ..earth..it's moon..rotation..all about Earth.. rotation revolution axis..surface .. temperature ..pressurePlanets .. description ..earth..it's moon..rotation..all about Earth.. rotation revolution axis..surface .. temperature ..pressurePlanets .. description ..earth..it's moon..rotation..all about Earth.. rotation revolution Planets .. description ..earth..it's moon..rotation..all about Earth.. rotation revolution axis..surface .. temperature ..pressure .Planets .. descr
Introduction to the Solar System
This is a presentation that I completed for EDU 290 in the Fall 2009. The intent of the assignment was to create a lesson that could be used by a student that missed the classroom instruction due to illness
The Solar System
The solar system consists of the Sun and eight planets that orbit it in the same direction and plane. The planets are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. The solar system also contains moons, asteroids, comets and other small bodies. Earth stands out as the only planet known to support life, due to the presence of liquid water on its surface and an atmosphere that enables a stable temperature through the greenhouse effect. The Moon is Earth's only natural satellite and influences tides on Earth through their gravitational interaction.
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国外毕业证学位证成绩单如何办理：
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My storyboard for a sword fight scene with lightsabers
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国外南澳大学南澳大学毕业证假文凭办理过程：
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storyboard: Victor and Verlin discussing about top hat
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the SUN
- 1. the SUN The Sun is now in the quietest phase of its 11-year activity cycle, the solar minimum - in fact, it has been unusually quiet this year - with over 200 days so far with no observed sunspots. The solar wind has also dropped to its lowest levels in 50 years. Scientists are unsure of the significance of this unusual calm, but are continually monitoring our closest star with an array of telescopes and satellites.
- 2. corona for a moderately active
- 3. near to the solar limb
- 6. magnetic structures on the sun’s surface
- 7. close up of magnetic structures on the sun’s surface
- 9. irregular-shaped sunspot and granules
- 12. in the sun’s hot
- 13. solar-b
- 14. animation of the sun
- 15. the moon across the face of the sun
- 17. the sun
- 18. widely spreading coronal mass ejection (CME)