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

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 3.0 The helical 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 3.0 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
Falling in Space
Stellar Radiation 2.1
Stellar Evolution 3.0
Magnitude & Distance 3.0
Stellar Distance 3.0

Soon to come

more later.

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