When Galaxies Collide

By: Lisa Harvey-Smith

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Paperback | 20 June 2025 | Edition Number 1

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Paperback
168 Pages

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1.5 x 12.9 x 19.5

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In 2018, Lisa Harvey-Smith was appointed as the inaugural Australian Women in STEM Ambassador by the Australian Federal Government. Why is the Milky Way blue? Why isn't a black hole dark? How many stars can you see with your naked eye?* How much hotter are blue stars than red ones?** Humans are the only known astronomers in the universe. When we look up at the night sky, we are linked to our ancestors. Away from city lights, we can see what generations of people before us have wondered at and weaved stories around. But all that will change.

The Andromeda Galaxy is rushing towards us at 400,000 kilometres an hour. When Galaxies Collide will guide you to look at the night sky afresh. It peers 5.86 billion years into the future to consider the fate of Earth and its inhabitants. Will the solution be to live in space without a planet to call home? Will one of the other 100 billion planets spawn life? Learn how to watch this space. * 9,000, but only half of that from any given point on Earth. ** 38,000 degrees vs 3,000.

About the Author

Lisa Harvey-Smith is an astronomer who studies the birth and death of stars and the properties of supermassive black holes.

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