Abekta

Nothing human is alien to me

User Tools

Site Tools

You are here: root » Courses » PHY 100: Physics for the Next Generation » 5. Sun and the Solar System

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revisionPrevious revision
Next revision		Previous revision
courses:phy100:5 [2023/08/16 10:45] – [4.1 Terrestrial planets] asadcourses:phy100:5 [2023/11/05 22:43] (current) – [4.2 Giant planets] asad
Line 55: Line 55:
 We talk about this planet in detail because we know most about it and also because it is our home. The inner and outer composition of the earth will tell us a lot of things about planets in general. We talk about this planet in detail because we know most about it and also because it is our home. The inner and outer composition of the earth will tell us a lot of things about planets in general.
  
-{{https://www.nasa.gov/sites/default/files/images/297755main_GPN-2001-000009_full.jpg?nolink&600}}+{{https://upload.wikimedia.org/wikipedia/commons/thumb/a/a8/NASA-Apollo8-Dec24-Earthrise.jpg/768px-NASA-Apollo8-Dec24-Earthrise.jpg?nolink&500}}
  
 The earth also became an astronomical object in the 1960s when the Apollo missions took pictures of the earth from the moon and the earth became another object in the sky for us. The first picture of the earth rising above the moon is shown above. It was taken by Apollo 8 astronauts in 1968. The earth also became an astronomical object in the 1960s when the Apollo missions took pictures of the earth from the moon and the earth became another object in the sky for us. The first picture of the earth rising above the moon is shown above. It was taken by Apollo 8 astronauts in 1968.
  
-{{https://www.nasa.gov/sites/default/files/images/608134main_world-orig_full.jpg?nolink&500}}+{{https://upload.wikimedia.org/wikipedia/commons/thumb/6/61/608134main_world-orig_full.jpg/767px-608134main_world-orig_full.jpg?nolink&500}}
  
 The interior of the earth is as complex as that of the sun. It has a 'solid' inner core, a liquid outer core, a mantle and a crust. The upper part of the mantle is almost like a liquid and the solid crust shakes and moves on top of this liquid-like upper mantle. The inner core is made of solid iron, the outer core of liquid iron. Because of the motion of iron at the cores, a giant magnetic field is created that extends beyond the atmosphere of the earth and creates a **magnetosphere** as shown below. The interior of the earth is as complex as that of the sun. It has a 'solid' inner core, a liquid outer core, a mantle and a crust. The upper part of the mantle is almost like a liquid and the solid crust shakes and moves on top of this liquid-like upper mantle. The inner core is made of solid iron, the outer core of liquid iron. Because of the motion of iron at the cores, a giant magnetic field is created that extends beyond the atmosphere of the earth and creates a **magnetosphere** as shown below.
Line 100: Line 100:
 One very interesting fact is that the earth is smaller than the cores of these planets. Each of the giant planets harbor a solid sphere the size of the earth at their center. One very interesting fact is that the earth is smaller than the cores of these planets. Each of the giant planets harbor a solid sphere the size of the earth at their center.
  
 +{{gallery>:img:planets}}
 ==== - The moons ==== ==== - The moons ====
 Only Earth and Mars among the terrestrial planets have moons, or natural satellites. Our moon is the 'moon', but the natural satellites of other planets are sometimes also called 'a moon'. Almost 300 moons have been discovered. Any object orbiting a planet is a moon no matter how small. But only 19 of the almost 300 moons are big enough to be completely round in shape because of their self-gravity. Only Earth and Mars among the terrestrial planets have moons, or natural satellites. Our moon is the 'moon', but the natural satellites of other planets are sometimes also called 'a moon'. Almost 300 moons have been discovered. Any object orbiting a planet is a moon no matter how small. But only 19 of the almost 300 moons are big enough to be completely round in shape because of their self-gravity.
courses/phy100/5.1692204300.txt.gz · Last modified: 2023/08/16 10:45 by asad
Donate Powered by PHP Valid HTML5 Valid CSS Driven by DokuWiki