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Quasars – The Brightest Black Holes

Quasars are among the most dramatic objects anywhere in the...

Is depression a response to unfortunate life events, or an...

Many robotic spacecraft have been sent to explore the cold...

Vision is the dominant sense through which sighted people have...

There is a whole Universe of different shapes, sizes and...

Each week new observations add to the tally of 'hot-Jupiters'...

Detailed observations of galaxies, clusters, and the fine structures in...

Why do humans sleep? How much do we need to...

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

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