Scientists are always looking for life beyond Earth and so, are studying exoplanets too (planets beyond the solar system).

A team of astronomers from India have found a new method to understand the atmosphere of exoplanets. This is done by observing the polarization of light.

Key facts!

• These astronomers, Aritra Chakrabarty and Sujan Sengupta are from the Indian Institute of Astrophysics, located in Bengaluru, Karnataka.
• They designed the new method by observing polarisation signatures of exoplanets using ground-based radars and observatories.
• This means the variations in the scattering intensity (strength) of light as the planets revolve around their stars.
• The astronomers developed a Python-based (computer programming language) numerical code to help study the exoplanets’ atmosphere.
• The scientists said that even if we can’t image the planet directly, this method will help us find out more about its atmosphere.
• Generally, astronomers use the transit method to detect planets far away in other systems.
• A transit occurs when a planet passes between a star and its observer.
• However, the new method can help us study the exoplanets even if the transit method is not possible.

Paxi explores exoplanets in the following video.  Youtube user “European Space Agency” 

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