Articles on Doppler effect
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Strap into your sleigh for some Christmas physics fun with Rudolph the ‘redshifted’ reindeer.
An astronomer explains why space looks so dark despite containing 200 billion trillion stars.
The planet Halla looks like it should have been devoured by its host star, a red giant called Baekdu – but a secret in the star’s past may hold the answer to the planet’s present.
Can artificial intelligence transform the search for alien intelligence?
Twisted sound beams suggest an advanced civilisation may be able to harness immense amounts of power from a black hole.
It’s all about the strong gravitational field of the black hole.
An astronomer suggests an idea to piggyback on the ambitious Breakthrough Starshot project that aims to send nano spacecraft to Alpha Centauri at a major fraction of the speed of light.
If there are infinite stars – where is all the light?
When an ambulance passes with its siren blaring, you hear the pitch of the siren change: as it approaches, the siren’s pitch sounds higher than when it is moving away from you. This change is a common…








