This recording was captured by the Radio Plasma Wave Science (RPWS) instrument on 2 September 2017
The discovery of the planet was made using an indigenously-designed spectrograph PRL in Ahmedabad.
It revealed that Titan is a little bit flatter - more oblate - than was previously known, which suggests there is more variability in the thickness of Titan's crust than previously thought.
Year in review: A comprehensive guide to everything that happened in the fields of space and astronomy in 2017
2017 was a great year for anyone interested in space and astronomy featuring several groundbreaking discoveries and heart-wrenching goodbyes
While studying K2-18b the researchers also located another planet which was in the same solar system called as K2-18c.
The Cassini team has released a mosaic captured by the wide angle camera on the spacecraft.
Scientists have found that intense methane rainstorms batter Saturn's largest moon Titan much more frequently than expected.
Till another mission is sent to Saturn, the observations and images captured by Cassini will be the last data set available to scientists.
NASA releases image of a brightly lit crescent on Enceladus captured by the Cassini mission to Saturn
Enceladus has all the ingredients required to support life, and is one of the reasons why Cassini was burned up in the Saturnian atmosphere.
The observations from Cassini have helped scientists better understand exactly why the moon is split into light and dark regions.
The spacecraft emptied its onboard solid-state recorder of all science data, prior to reconfiguring for a near-real-time data relay during the final plunge.
Cassini completes its mission by burning up in the Saturnian atmosphere: All you need to know about the spacecraft
Cassini will be transmitting information during the final dive, till the very moment when the friction from the atmosphere burns up the spacecraft.
You can watch NASA's Cassini make its 'Grand Finale' dive into Saturn's atmosphere later today: Here's how
The Cassini mission was launched in 1997 as a joint venture between NASA, ESA and the ASI. It's been orbiting Saturn since 2004.
Nasa's 13-year old mission Cassini-Huygens mission to take its final dive into Saturn on 15 September
Cassini's final manoeuvres begin at 0714 GMT on Friday, although the signal will only reach Nasa 86 minutes later.
NASA has released a movie made from images captured during Cassini's final observations of the plumes of water on the Saturnian moon, Enceladus.
NASA's Cassini mission initiates its final complete grand finale orbit and gives a goodbye kiss to Titan
The Cassini spacecraft passed 119,049 kilometers over the hazy atmosphere of Titan, which is rich in hydrocarbons.
Cassini set for final dive towards Saturn on 15 September; imaging cameras to send photos of Titan and Enceladus
Nasa's robotic spacecraft Cassini that has been orbiting Saturn for 13 years is set for a final dive towards the planet and burn up in its atmosphere in a "grand finale" after it flies past Titan
Launched 20 years ago, NASA's Cassini spacecraft now has less than 20 days for its mission-ending dive into the atmosphere of Saturn.
NASA's Cassini spacecraft captures the Saturnian moon Tethys lit up by light reflected from the planet
Anyone on the surface of Tethys looking up, would see Saturn lighting up the night sky.