Marble/C3/Celestial-Bodies-and-Constellations/English

Visual Cue	Narration
Slide Number 1 Title slide	Welcome to this Spoken tutorial on Celestial Bodies and Constellations.
Slide Number 2 Learning Objectives	In this tutorial we will learn about, Celestial bodies Stars and constellations Configure the setting of stars and constellations.
Slide Number 3 System Requirements	To record this tutorial, I am using, Ubuntu Linux OS version 16.04 Marble version 1.12.20 and A working internet connection The process demonstrated is this tutorial is identical in, Ubuntu Linux OS, version 18.04 Marble version 2.2.20
Slide Number 4 Pre-requisites https://spoken-tutorial.org	To practise this tutorial, learner should be familiar with Marble interface. For the prerequisite Marble tutorials, please visit this site.
Cursor on the interface.	I have opened the Marble interface in the default Atlas view.
Drag the - button on the windrose	Let us zoom out to see the black sky.
Right-click on Overview map, select Hide option from context menu. Hide Compass and Scalebar plugins.	I will hide Overview map, Compass and Scalebar for clarity.
Point to the interface. Point to the dark surface on the interface. Rotate the globe and point to the sky.	Black coloured surface on the interface represents the sky on a clear night. When we rotate the globe, we can see various objects present in the sky. These objects are called celestial bodies.
Cursor on the interface. Click on Settings >> select Panels >> select Hide All Panels.	We will now hide all the panels. Go to the Settings menu and select Panels. From the sub-menu select Hide All Panels.
Rotate the globe. Point to Sun, Moon stars and others.	To see more objects in the sky let us keep rotating the globe. Notice that we can see sun, moon, stars and other celestial bodies.
Point to the stars. Point to the sun.	Here we can see the countless bright stars in the sky. The nearest star to the Earth is the Sun.
Point to the stars.	Our best estimates tell us that the Milky Way is made up of approximately 100 billion stars.
Cursor on the interface.	Let us now configure the settings for stars in the Marble interface
Click on Settings >> select Configure Marble Virtual Globe option. Configure window opens.	Click on the Settings menu. Select Configure Marble Virtual Globe option. Configure window opens.
From the left panel, select Plugins option. Point to Plugins menu. Point to the scroll bar at the right side of the plugins menu.	From the left panel, select the Plugins tab. Plugins menu opens in the right panel. At the extreme right of the Plugins menu we see a scroll bar.
Scroll down and locate Stars plugin Plugins menu >> click on the Configure button corresponding to Stars.	Let us scroll down and locate Stars plugin. Click on the Configure button corresponding to Stars.
Point to Configure Stars Plugin window. Point to the two tabs namely Celestial Objects and Lines and Orientation. Point to Celestial Objects tab.	Configure Stars Plugin window opens. This window has two tabs, Celestial Objects and Lines and Orientation. Celestial Objects tab opens by default.
Point to the different options in the Celestial Objects tab	In the Celestial Objects tab, we can see different sections.
Point to Star Magnitude Limit section	Go to Star Magnitude Limit. Star Magnitude Limit represents the magnitude of stars seen on the interface.
Point to the slider under Star Magnitude Limit Drag slider to 0 magnitude. Click on the OK button in the window. Click on the OK button in the Configure window	Under Star Magnitude Limit we can see a slider to change the magnitude. Drag the slider to 0 magnitude. Click on the OK button in the window. Click on the OK button in the Configure window.
Point to the plain black surface.	Notice that stars have disappeared from the interface. Now we can clearly see the celestial bodies.
Right-click anywhere >> context menu >> select Configure option.	To open Configure Stars Plugin window, right-click anywhere on the black sky. A context menu opens.. Select Configure option from the menu.
Point to Solar System option	In the Configure Stars Plugin window, next section is Solar System
Scroll down and show the names of planets. Scroll down.	This section has check-boxes for Sun, Moon and planets in the solar system. Let us scroll down to see all the check-boxes.
Point to the checked boxes.	By default, sun and moon check-boxes are checked.
Check the boxes of all the planets.	We will check all the boxes to see the planets in the sky.
Point to Earth check-box.	Observe that we cannot click on Earth check-box as we are observing from Earth.
Point to these 2 check-boxes.	Next we have two check-boxes. Use name labels and Magnify Sun and Moon. By default these check-boxes are checked.
Point to the check-boxes.	These check-boxes are used to show the names of sun, moon and other planets.
Point to Other section	Other section represents Deep Sky objects. For now we will leave them as default.
Click on the OK button Point to Sun in the sky.	Now click on the OK button in the window.
Point to the objects which form some shapes .	We can see some lines and shapes in the sky. They are constellations.
Slide Number 5 Constellations	Let us see what are constellations. A constellation is a group of stars which forms an imaginary shape in the night sky. In Latin, Stella means a star and constellation means a set of stars.
Slide Number 6 Constellations	Constellations are usually named after mythological characters, people, animals and objects. It is like a game of connecting the dots. The visible night sky is divided into 88 constellations by astronomers. Out of which 12 are zodiac signs.
Cursor on the black sky.	For better visibility, I will change the colour of the constellations.
Right-click anywhere on the black sky. Point to context menu Select Configure option from the menu.	To open Configure Stars Plugin window, right-click anywhere on the black sky. Select Configure option from the context menu.
Configure Stars Plugin window opens. Click on the Lines and Orientation tab	Configure Stars Plugin window opens. Click on the Lines and Orientation tab.
Under Constellations >> point to the check-boxes Lines and Labels. Click on the box corresponding to Lines.	Under Constellations, we can see two check-boxes, Lines and Labels. Click on the button corresponding to Lines.
Point to colour window. Select yellow colour from the box. Click on the Ok button	Colour window opens. I will select yellow colour from the window. Click on the OK button in the window.
Click on the box corresponding to Labels. From the colour box select rose colour. Click on the OK button in the box.	Next click on the button corresponding to Labels. From the colour window I will select red colour. Click on the OK button in the color window.
Point to Names. Point to the drop-down button corresponding to Names. Click on the drop-down button. Latin Name is selected.	Below Labels we can see Names drop-down. In the drop-down, Latin Name is selected by default. I will leave it as it is.
Point to Coordinate Grid section Point to Celestial Equator, Celestial Poles, and Ecliptic check-boxes	Next is the Coordinate Grid section. Under the Coordinate Grid, we see Celestial Equator, Celestial Poles and Ecliptic check-boxes. I will leave them as default.
Click on the Celestial Objects tab	Now let us make the stars visible on the interface. Click on the Celestial Objects tab.
Under Star Magnitude Limit >> drag the slider to 7 magnitude Click on the OK button in the window.	Under Star Magnitude Limit , drag the slider to 7 magnitude. Now click on the OK button in the window.
Point to the constellations.	We can see the changes in the Lines and Labels of each constellation.
Rotate and point to each constellations. Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricorn, Aquarius and Pisces.	Rotate the globe to see the various zodiac signs.
Slide Number 7 Summary	Let us summarise. In this tutorial we have learnt about Celestial bodies Stars and constellations Configure the settings of stars and constellations
Slide Number 8 Assignment	As an assignment Explore more about Coordinate Grid option. Hint: Use Celestial Objects tab in Stars plugin.
Slide Number 9 About the Spoken Tutorial Project	The video at the following link summarizes the Spoken Tutorial project. Please download and watch it.
Slide Number 10 Spoken Tutorial workshops	The Spoken Tutorial Project team: conducts workshops using spoken tutorials and gives certificates. For more details, please write to us.
Slide Number 11 Forum for specific questions	Please post your timed queries in this forum.
Slide Number 12 Acknowledgement Spoken Tutorial Project is funded by, National Mission on Education through ICT and Pandit Madan Mohan Malaviya National Mission on Teachers and Teaching, MHRD,Government of India.	Spoken Tutorial Project is funded by, MHRD, Government of India. This tutorial is contributed by Viji Nair and Madhuri Ganapathi from IIT Bombay. Thank you for watching.

Contributors and Content Editors

Madhurig, Nancyvarkey, Snehalathak, Vijinair