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

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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