Occam crater on Ceres (Dawn)
Pluto mountains and plains (New Horizons)
Horsehead nebula (HST)
The Nile at night (ISS)
Nightscape (Mark Gee)
Saturn closeup (Cassini)
Pluto topography (New Horizons)
Saturn's moon Enceladus (Cassini)
Victoria crater on Mars (Erik Wernquist)
Sunset on Mars (Spirit rover)
Jupiter and Ganymede (HST)
Rhea in front of Titan (Cassini)
Andromeda galaxy (Robert Gendler)
Crater slope on Mars (MRO)
Sombrero galaxy (HST)
Titan above Saturn's rings (Cassini)
Saturn's moon Hyperion (Cassini)
Eta Carinae (Stephen Chadwick)
Mars weather (MRO)
Neptune's moon Triton (Voyager 2)
Carina Nebula (HST)
Carina Nebula in IR (HST)
Ligeia Mare on Titan (Cassini)
Titan and ring shadow (Cassini)
Saturn's moon Epimetheus (Cassini)
Geysers on Enceladus (Cassini)
Helix nebula in IR (Vista)
Jupiter (Juno)
Vela supernova remnant (Stephen Chadwick)
Aurora on Saturn (Cassini)
Flyby Pluto (New Horizons)
Earth and Moon from Saturn (Cassini)
Jupiter (Juno)
Earth setting on Moon (Kaguya)

Our EBooks

are embedded on this website and do not require anything else than the browser that you are using right now. EBooks are ideally suited for self-study.

All our EBooks have a linked Table of Contents and prev and next buttons for easy page navigation.

We are planning to soon include self-tests in our EBooks to help you to check your progress.

Click on the icon in the column "Run" in the table below to open the EBook in a separate tab.

 Our EBooks

TitleDescriptionRun
Click on icon in column Run The EBook will open in a separate tab
The Rhythmic Sky 3.0 Explains how celestial objects move in the sky, and why. This is the EBook version of the much more extensive course in our Slides section.  
A Sense of Scale 3.0 Building a scale model of the Universe, is that possible?  
Matariki 3.2 The heliacal rising of the open star cluster Pleiades and how that relates to the New Year celebrations of the New Zealand Māori  
Falling in Space 2.1 A primer in Orbital mechanics; How to travel from A to B in space.  
Stellar Radiation 2.1 The importance of EM-radiation for astronomy, absorption and emission lines, spectroscopy, HR-diagram.  
Stellar Evolution 3.0 How stars are formed, spend most of their lifetime and how they "die" and mapping of these processes on the HR-diagram. How are the chemical elements formed.  
Stellar Distance 4.0
There is no single technique to measure distance in the Universe. Astronomers use the term Cosmic Distance Ladder. We are going to climb that ladder.  
Magnitude & Distance 3.0 How distance to celestial objects can be obtained from the object's luminosity or magnitude. We discuss flux; magnitude scale; distance modulus; standard candles.  
     

 

 

 

Already Available

A Sense of Scale
The Rhythmic Sky
Matariki 3.2
Falling in Space
Stellar Radiation 2.1
Stellar Evolution 3.0
Magnitude & Distance 3.0
Stellar Distance 4.0

Soon to come

more later.

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