70th Day Of Lockdown

Maharashtra70013301082362 Tamil Nadu2349513170187 Delhi208348746523 Gujarat17217107801063 Rajasthan91006213199 Uttar Pradesh83615030222 Madhya Pradesh82835003358 West Bengal57722306325 Bihar3945174123 Andhra Pradesh3676237464 Karnataka3408132852 Telangana2792149188 Jammu and Kashmir260194631 Haryana2356105521 Punjab2301200044 Odisha210412459 Assam14862854 Kerala132760811 Uttarakhand9592225 Jharkhand6612965 Chhatisgarh5481211 Tripura4231730 Himachal Pradesh3401186 Chandigarh2972144 Manipur83110 Puducherry79250 Goa73500 Nagaland4300 Meghalaya28121 Arunachal Pradesh2010 Mizoram110 Sikkim100
Related Stories

Scientists discover a new way to hunt for aliens

Published Jun 17, 2014, 10:28 pm IST
Updated Apr 1, 2019, 12:37 am IST
Researchers have developed a powerful new model to detect life on planets outside of our solar system
This picture is used for representation purpose only. Photo: www.visualphotos.com
 This picture is used for representation purpose only. Photo: www.visualphotos.com

London: Researchers have developed a powerful new model to detect life on planets outside of our solar system more accurately than ever before.

The new model, developed by researchers from the University College London (UCL), focuses on methane, the simplest organic molecule, widely acknowledged to be a sign of potential life.

Researchers from UCL and the University of New South Wales have developed a new spectrum for 'hot' methane which can be used to detect the molecule at temperatures above that of the Earth, up to 1220 degrees Celsius - something that was not possible before.

To find out what remote planets orbiting other stars are made of, astronomers analyse the way in which their atmosphere absorbs starlight of different colours and compare it to a model, or 'spectrum', to identify different molecules.

"Current models of methane are incomplete, leading to a severe underestimation of methane levels on planets," said Professor Jonathan Tennyson, from UCL Department of Physics and Astronomy, and co-author of the study.

"We anticipate our new model will have a big impact on the future study of planets and 'cool' stars external to our solar system, potentially helping scientists identify signs of extraterrestrial life," Tennyson said.

The study, published in the journal PNAS, described how the researchers used some of the UK's most advanced supercomputers, provided by the Distributed Research utilising Advanced Computing (DiRAC) project and run by the University of Cambridge, to calculate nearly 10 billion spectroscopic lines, each with a distinct colour at which methane can absorbs light.

The new list of lines is 2,000 times bigger than any previous study, which means it can give more accurate information across a broader range of temperatures than was previously possible.

The new model has been tested and verified by successfully reproducing in detail the way in which the methane in failed stars, called brown dwarfs, absorbs light.



Click on Deccan Chronicle Technology and Science for the latest news and reviews. Follow us on Facebook, Twitter