Researchers discover exoplanet using OGLE gravity lens

Q.  Researchers detected Saturn like planet residing near the galaxy bulge of the Milky Way using the OGLE gravity lens. What does OGLE stand for?
- Published on 28 Mar 16

a. Optical Gravitational Lensing Experiment
b. Optician Gravitation Lens Experiment
c. Optical Gravitation Lensing Ecology
d. None of the above

ANSWER: Optical Gravitational Lensing Experiment
 
Researchers have detected a Saturn like planet residing near the galaxy bulge of the Milky Way. This exoplanet has a mass between Jupiter and Saturn. It orbits a star with half the mass of the solar system’s Sun. As the star moves in front of another star, light from the distant star is bent by the gravitational pull of the closest star and this causes magnification of the distant star. Researchers have used the gravitational microlensing technique not relying on light from host stars. Through planets can be detected, this is so even when the host stars cannot be detected. The method for detecting the gas giant orbiting the lens star of the microlensing event is called gravitational microlensing. Gravity lens is part of the OGLE collaboration called Optical Gravitational Lensing Experiment.

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