Book Reviews

Introducing the Planets and their Moons

An excellent summary of the planets with the right amount of facts, writes reviewer Ian Welland. It uses a geological approach and each chapter deals with specific topics rather than being devoted to one planet in turn. “A super value book that will appeal to more than the beginner or younger reader,” he says.

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Quasars result from violent galactic mergers

Using the Hubble Space Telescope’s infrared vision, astronomers have unveiled some of the previously hidden origins of quasars, the brightest objects in the universe. A new study finds that quasars are born when galaxies crash into each other and fuel supermassive, central black holes.

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Hot lava flows discovered on Venus

The European Space Agency’s Venus Express spacecraft has found the best evidence yet for active volcanism on Earth’s neighbour planet. Seeing the planet’s surface is extremely difficult due to its thick atmosphere, but radar observations by previous missions to Venus have revealed it as a world covered in volcanoes and ancient lava flows.

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A globular cluster where stars collide

Using the advanced adaptive optics system GeMS, on the Gemini South telescope, astronomers have imaged a beautiful stellar jewel-box — a tightly packed cluster of stars that is one of the few places in our galaxy where astronomers think stars can actually collide.