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A COMPREHENSIVE SERIES OF ARTICLES ON THIS TOPIC

<p>Rosemary Coogan has graduated from astronaut training with the European Space Agency (ESA/PA)</p>

people

Astronaut Rosemary Coogan graduates from space training

After receiving the certification at ESA’s European Astronaut Centre in Cologne, Germany, she is now eligible for spaceflight

<p>The technology may enable the discovery of hidden planets (Alamy/PA)</p>

outdoors

Scientists in breakthrough that could uncover hidden planets

<p>The peak of the Perseids occurs around August 11, 12 and 13, but this year the best time to watch is a little earlier.</p>

outdoors

Sky Matters: When, where and how to watch the Perseids meteor shower

Hubble Space Telescope with Earth

people

Sky Matters: Dr Niall Smith on why we may be 'all made of stars'

Astronomers find black hole 12bn times sun’s size

world

Astronomers find black hole 12bn times sun’s size

NASA captures striking coronal loops from the sun's surface

general

NASA captures striking coronal loops from the sun's surface