Alan Richmond

Tag Archive for Astrophysics

Book Review: Coloring the Universe

Coloring the Universe

Coloring the Universe: An Insider’s Look at Making Spectacular Images of Space by Dr. Travis Rector, Kimberly Arcand & Megan Watzke. This is a coffee-table astronomy book with a difference: the processing behind the beautiful astronomical images we’re now so familiar with, is revealed. This book is actually very readable and enjoyable, thanks to the authors’ amenable…

Barcodes in the Stars: Stellar Spectroscopy

Fraunhofer Lines in the Sun's Spectrum

What are the Sun and Stars Made of? Scientists tell us that the stars (e.g. our Sun) are made mostly of hydrogen (72%) and some helium (26%) and a little bit of some (65) other elements such as oxygen, carbon, neon, …). Now how do they know that? It’s not like they could send a…