Hans Rickman Books

Worlds in Interaction
Worlds in Interaction

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Highlights of Astronomy
Highlights of Astronomy

By Hans Rickman

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Worlds in Interaction Small Bodies and Planets of the Solar System
Worlds in Interaction Small Bodies and Planets of the Solar System

By M.J. Valtonen, Hans Rickman

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Planet Earth is part of our Galactic environment, not just the product of it, and it is still today influenced by phenomena related to Galactic forces. Specifically, our planet is affected by its n...

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Highlights of Astronomy
Highlights of Astronomy

By Hans Rickman

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If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.

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