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Arithmetic by Computer and by Human

Long multiplication, long division and logarithms are, for many, dim-remembered...

When light from the Sun and the Moon enters our...

X-radiation is only emitted by the hottest and most energetic...

Our only natural satellite has been an object of fascination...

Interstellar space is not truly a vacuum devoid of matter...

Changes in the Sun's output can endanger health, power supplies...

Beyond the Solar System, all astronomers have to work with...

Robbert Dijkgraaf's focus is on string theory, quantum gravity, and...

Clusters of galaxies are the largest organised structures in the...

Rotation is a fundamental physical process throughout the Universe. So...