In Trappist-1 world, the planets are so close together that life forms can hop between them. Scientists believe the planets named Trappist-1 'e', 'f' and 'g' have the essential elements to support life.
Adding to the tally of last year's 3 Earth like planets, NASA discovered 4 more such planets. The latest finding revives the search for life beyond our planet.
Ceres, a dwarf planet between Mars and Jupiter is found to have organic material and NASA's Dawn mission hints at the potential presence of some kind of life form.
NASA’s NExSS Initiative, or Nexus for Exoplanet System Science initiative plans to bring together top research groups and will provide a synthesized approach in the search for habitable exoplanets while also looking for signs of extraterrestrial life.
The question of whether life outside of this Earth actually exists has been a debate for the record books. However, many today believe that there is, in fact, life outside of the Earth but we just haven't found it yet. NASA's top scientist now predicts that we will find signs of alien life by 2025, with even stronger evidence to come in the years that follow.