Doppler effect

Conceptual illustration of a diffractive solar sail.

Hidden physics complicates the dream of launching sailing spacecraft to other stars

  • No comments
A new theoretical study points to another problem with interstellar light sails: As they approach relativistic speeds, the Doppler effect and the deflection of light reduce the efficiency of the thrust. In one of the weakest contributions of light, even
The brightness of RS Puppis, one of the brightest Cepheid variable stars, changes at a constant rate on a six-week cycle. Credit: NASA, ESA, Hubble Heritage Team (STScI/AURA)-Hubble/Europe Collaboration

Pulsating Beacons: Revolutionary Measurements Redefine Cepheid Variable Stars

  • No comments
**Title:** Pulsating Beacons: Revolutionary Measurements Redefine Cupid Stars **Subtitle:** New study reveals deep insights into the structure and evolution of cupid stars through precise radial measurements, offering new approaches to the study of the universe
An amusing representation of the TOI-1136 system if each of the bodies in the system were a duck or a duckling. Credit: Rae Holcomb/University of California at Irvine

The evolution of planets is revealed in a distant solar system

  • One response
A newly discovered solar system with six confirmed extrasolar planets and a possible seventh increases astronomers' knowledge of star formation and evolution
Doppler effect. Illustration: shutterstock

Spotlight on the Doppler effect

If you have ever stood on the side of a highway, or an ambulance passed you by at high speed, you must have noticed the change in tone that occurs exactly when the vehicle or the siren passes you by: the noise "drops" sharply
A simulation of galaxies in the age of reionization of the settled universe. Illustration: M. Alvarez, R. Kashler and T. but

The most distant galaxy has been discovered

  • 233 תגובות
Science website logo
SEARCH