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BellaOnline's Astronomy Editor


Using physics to study the universe and the objects in it such as stars, galaxies, black holes and nebulae.

ABC of Astronomy - D Is for Double Star star
We´re used to having just one Sun, so the planet Tatooine in George Lucas´s Star Wars seems exotic with its double sun. Yet at least half the stars we can see in the sky are doubles. But a "double star" can be a true binary or just an optical double, which is a chance alignment of unrelated stars.

Bang! - Book Review star
What would it take to explain the Big Bang Theory? James Lu Dunbar´s "Bang!" might do it - and amuse you and your children at the same time. It´s a splendid little book which tells the story of the universe in verse and appealing graphics.

Bang! - The Universe Verse - book review star
What would it take to explain the Big Bang Theory? James Lu Dunbar´s "Bang!" might do it - and amuse you and your children at the same time. It´s a splendid little book which tells the story of the universe in verse and appealing graphics.

Empire of the Stars - book review star
A fateful meeting of the Royal Astronomical Society in London adversely affected the lives of two scientists and hindered progress in the study of black holes for a half a century. So says the author of Empire of the Stars. BellaOnline´s astronomy editor liked the book, but wasn´t convinced.

George´s Secret Key to the Universe - book review star
In Lucy & Stephen Hawking´s book, the hero George used to have a quiet life, but now he´s trying to rescue his next door neighbor from a black hole. Here´s a lively illustrated story, beautiful color images of the universe, and from the man who knows, a great explanation of what a black hole is.

Gravitational Waves – What Are They? star
In February 2016 news of gravitational waves went round the world. But what are these waves sometimes described as ripples in spacetime? To find out let's go back over a century to a time when Albert Einstein was completing the work that would change our view of the Universe.

Icarus at the Edge of Time - book review star
Icarus flew too close to the Sun with wings of wood and wax. The wax melted and he fell to his death. Brian Greene´s Icarus of the future flies too close to a black hole and finds that he should have paid more attention to Einstein.

Quasar Facts for Kids star
Quasars are the brightest and most distant objects in the universe. And when we see them we are looking into the past, even before our Sun and Solar System existed.

Smallest Star in the Universe star
No one could possibly say that a star is the smallest one in the whole Universe. But the smallest known star is 2MASS J05233822-1403022, which is a pretty big name for a star that´s about the size of Saturn. Could there be even smaller ones as yet unknown?

Stellar Evolution star
The life histories of stars from birth in nebula, through the main part of their lives (the main sequence) and on to the end, possibly as a white dwarf or in a supernova explosion.

The Magic Furnace - book review star
What is everything made of? What makes the Sun shine? "The Magic Furnace" relates the tale of how science answered these questions. The book tells a good detective story with great characters, and clues include the Big Bang and the biggest explosions in the universe.

Top Astronomy Stories 2012 star
What were the big astronomy stories of the year 2012? Here is my choice of the top ten plus a non-story. What do you think?

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