Doppler shift

Dodging Doppler: Atomic clocks and laser cooling

Atomic clocks are the best time keepers, but need to be kept incredibly cold. Paradoxically, the cooling is achieved by shining light on them.

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Gravitational vortex sheds light on black holes

Astronomers have explained a strange effect observed in the vicinity of black holes.

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Hunting for life in alien worlds
Two of the most fundamental questions asked by people are how life emerged on the Earth, and whether we are alone in the cosmos. These deeply important questions form the core of a new kind of science, one that recently has been rapidly gathering momentum: astrobiology. Lewis Dartnell explains.
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Doing the time warp
Einstein proved correct, ..... again!
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Flyby asteroid
Asteroid just missed Earth
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planets
Brave young worlds
Extrasolar planets have been grabbing the headlines
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Doppler detectives
Researchers observe the Inverse Doppler effect for the first time.
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Stellar heartbeats

Astronomers have for the first time listened to the heartbeat of a star other than our own Sun.

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The dynamic sun
On 11th August 1999 a total eclipse of the Sun will be visible from parts of the UK. It will provide a spectacular display, but why is the Sun so interesting? Helen Mason explains.
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