Sun (our star). 2) Briefly describe the major levels of structure (such as planet‚ star‚ galaxy) in the universe. Planet: (a) Orbits a star‚ (b) large enough for its own gravity to make it round‚ (c) has cleared most other objects from its orbital path. Sun: The star of our solar system. Star: Large‚ glowing ball of ignited gas that generates heat and light through nuclear fusion in its core. Galaxy: A great island of stars in space‚ containing a few hundred million or trillion stars held
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began to change. New findings stirred the old beliefs and paved the way for questions about where the universe came from. One observation altered our idea about the true scale of the universe. It started with a mystery in the sky. From the 1900’s onwards‚ it was known that our solar system was at home in the Milky Way and that was the full extent of the universe. Every star that you could see with the naked eye was in our galaxy. Surrounding it was just a meaningless‚ empty
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civilizations in The Milky Way Galaxy whose electromagnetice missions are detectable. According to SETI website‚ the Drake Equation values R*‚fp‚ ne‚ fl‚ fi‚ fc‚ L are defined as the following. In the first part of the equation is R*. It represent the 7 new stars forming annually in a year. According to NASA‚ they reported about new stars forming‚ "The team found and confirmed aluminum-26 is found primarily in star forming regions throughout the galaxy and each year our galaxy creates on average
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expose people to these dangerous events. Dr.Latifa AL-Naimi 3 The universe is a huge wide-open space that holds everything from the smallest particle to the biggest galaxy. And it includs matter & energy. 1- Energy: such as movement‚ light‚ heat‚ radiation. 2- Material: is composed of billions of galaxies‚ stars in addition to the planets‚ moons‚ comets‚ meteorites‚ gases‚ dust‚ and nebulas. Dr.Latifa AL-Naimi 4 Origin and creation of the universe There are many theories
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had the time for the great Adler. I say great‚ because my experience was way more interesting and pleasing then I expected it to be. The first exhibit that I came upon was “On our Solar System” it had the clone model of the rover that is currently taking pictures and samples of the planet Mars which is also known as “The Red Planet”. There were pictures of all the moons and planets discovered in our solar system which was way more than I knew about. I saw a couple models of old telescopes that were
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wondrous Milky Way. The foggy band of white light has been proven to be the home of our Solar System. There are so many different aspects that make the Milky Way so amazing. Its structure‚ age‚ surrounding galaxies and clusters‚ mythology‚ and existence of life throughout it make the Milky Way so great. The Milky Way is the immense‚ spiral galaxy which is home of our solar system with around 400 billion other stars and their planets‚ with thousands of nebulae and clusters. The milky way is actually
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stellar black holes in Earth’s galaxy. Earth’s galaxy is called the Milky Way‚ but it’s not a candy bar! Stellar black holes aren’t the biggest‚ though! There are bigger black holes called “supermassive” black holes. These kinds of black holes have the mass of OVER A MILLION SUNS TOGETHER!!!WOW!That’s a lot of mass! Scientists have discovered proof that every galaxy has a supermassive black hole in the center! The supermassive black hole found in the center of the Milky Way was named Sagittarius A‚ and
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Nebula is an interstellar cloud of dust‚ hydrogen‚ helium and other ionised gasses. The discovery of nebula goes back to the early 1600s. Nicolas-Claude Fabri de Peiresc discovered the Orion Nebula in 1610 using a refracting telescope. Nicolas-Claude Fabri de Peiresc used this telescope to observe the skies‚ for example‚ it was used to observe Jupiter’s moons as well as other aspects of space‚ including nebulae. The discovery of the Orion nebula was revolutionary. While it was Nicolas-Claude Fabri
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Chapter 15 (23): Black Holes a) 15.1: Principle of equivalence (1) The Principle of equivalence: Idea that life in a free falling laboratory and life with no gravity is equivalent. ii) 15.1.2 Gravity or acceleration: (1) In space shuttle it appears as though there is no gravity or force but in reality everything from the shuttle to the pencil inside the shuttle is continuously falling but cause it’s all at the same speed it appears as force less. b) 15. 2 Space-time and gravity (1) Einstein
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from internet. PMS/CSS Notes Contents Topic 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. Nature of Science Contribution of Muslims Scientists Impact of Science on Society Universe Galaxy Solar system Sun Earth Atmosphere Weather Cloud Rain Acid Rain Minerals Rock (Mineral) Mineral Deposit Lava Solar and Lunar Eclipses Day and Night and their variation Energy Sources and Resources of Energy Energy conservation Ceramics Plastics Semiconductors
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