Tell-tale signs of water exist in space and radio signals picked up have still to be analysed.
Scientists are now scouring the Milky Way for earth like rocky planets that may well provide them with the answers they are looking for; but from data already collected they believe there are probably life forms in outer space.
When taking into account five hundred human beings have already flown beyond earth's atmosphere the further in range they travel the more questions may be answered.
Despite all the above activities there are many questions that need to be answered on this planet. Possibly climate control, disease, new energy sources.
Life in the very depths of the oceans have not been properly explored. Only three visits to the bottom of the 'Mariana Trench' 10,994 metres deep.
At the enormous pressure that exists at that depth life forms are existing.
Film directorwitnessed examples in a recent dive in a bathysphere.
Any life forms that might exist in the milky way and become revealed. In view of the VAST distances involved they seem unlikely to have any impact on life on this planet apart from satiating scientists' curiosity.