Extragalactic radio sources as lighthouses for SETI

The search for extraterrestrial intelligence (SETI) is one of the most ambitious scientific endeavors. It aims at detecting signals produced intentionally or unintentionally by extraterrestrial civilizations ([Siemion et al., 2013](http://arxiv.org/abs/1412.4867)). The Galaxy, however, is vast a...

By Jorge I. Zuluaga

Want to be a Martian? Be a photoautotrophic man

Being a Martian is not too far impossible. Now, scientists are looking forward to changing the Martian environment into a favorable state with the current advancement of the technology. Producing O2and food are predominantly seen challenges at present. All the available hypotheses in this are ab...

By Gamini Seneviratne, Mahesh Premarathna

Supercritical Exoplanetary Atmospheres as Potential Habitats for Extraterrestrial Aeroplankton

An increasingly familiar class of exoplanets amongst those being continually discovered is the "Super-Earth" ([Valencia+2007](http://iopscience.iop.org/0004-637X/656/1/545/)), with a mass intermediate between Earth and Neptune. These have been found inside habitable zones ([Udry+2007](http://www...

By Mark Hammonds