PPT-The sun as a star

Szydagis 04132015 1 14 NASASTEREOSDOGSFC 1 How do we know that the sun is a star and bonus when and how did we learn this in history Note I mentioned this in class but it was a long time ago. Historical Perspective. Observations of Indigenous People. Enabling people to track seasons when dependent on agriculture. The Moon’s cycle of phases. The seven days are named after the Sun, Moon, and five recognized planets in ancient times. The Sun and the Stars. The Sun and the Stars. Binary stars:. Most stars are found in binary or multiple systems.. Binary star systems consist of 2 stars which are gravitationally bound with each star. Lecture 11: Extra-Solar Planets. Outline. Finding Extra-Solar Planets. The Two-Body Model. A Celestial Cubic. Example-51-Pegasi. 2. Finding Extra-Solar Planets. Recent discoveries of planets orbiting stars rely on a type of problem known as an . Lyra. Star Vega. Star Zeta. Star Delta . 2. . Star . Sulafat. Star . Sheliak. Star Vega. The brightest star in . Lyra. Constellation. 25 light years from earth. The light we now see from the stars was from 25 years ago. The . corona. is the wide, outermost layer of a Sun’s . atmosphere – (AL). The. . chromosphere. . is the orange-red layer of the Sun’s atmosphere, between the photosphere and the . corona – (AL). Curved space (33-3). Rate of clocks running (like whiteboards). Black Holes (33-3). Red Shift (33:29). Hubble’s Law (33:25). Apparent Curvature of light:. In 1919, Sir Arthur Eddington measured the deflection of light near the sun during an eclipse.. Spyros Kitsionas . Grade 5 BISS. 28/3/2017. The Sun our nearest Star. We live in a galaxy called the . Milkyway. because of how it appears on the night sky.. Galaxy = . Γαλαξίας . (Alex! Help!). “The Star”. Presented by :. Hanaa Mansour Mansour.. Student no: 220111759. Short story course.. Dr. Sami Breem.. The outline:. Brief notes about the author.. Summary of the story.. Plot summary.. 4. th. grade Science - Askew. STAR. A _________ is a hot sphere of gas that gives off energy and is held together by its own gravity.. Temperature. A star’s color reveals its _______________.. The reddish _________ is a cool star. . G. 2. star. , one of more than 100 billion stars in our galaxy . Diameter. : 1,390,000 km - Earth is nearly 100 times smaller. The Sun. No solid surface. Has three layers of atmosphere. Corona, Photosphere, and Chromosphere. La gamme de thé MORPHEE vise toute générations recherchant le sommeil paisible tant désiré et non procuré par tout types de médicaments. Essentiellement composé de feuille de morphine, ce thé vous assurera d’un rétablissement digne d’un voyage sur . Chap 17-18: Stellar Evolution – the Life and Death of a Star… Here’s the story we’ll tell… Lowest mass stars and their evolution Low mass star evolution High mass star evolution Stellar death, and stellar corpses Baby star. Composed of gas and dust. Protostar. Center of nebula begins to shrink as it gets hotter . Nuclear fusion begins . Main Sequence. “Middle Age”. Star will spend most of its life in this stage. CORE. The sun produces an enormous amount of energy in its core, or central region. The sun's energy comes from nuclear fusion. During nuclear fusion, hydrogen atoms join together to form helium. Nuclear fusion only can take place under conditions of extremely high pressure and temperature. The temperature inside the sun's core reaches 15 million C, high enough for nuclear fusion to take place. .