The director of NASA's planetary science division, James Green, predicts the possibility that humans will detect alien life right in the solar system over the next 10 years.
One of the first 'tourists' to Jupiter's icy satellite planet could be a small submarine about the size of only two cans of soft drinks.
In an article in Astrophysical Journal Letters, scientists from the US Aerospace Agency (NASA) claim hydrogen peroxide (H2O2) is a common surface substance Europa.
Huge gaps on Earth, Mars aliens, logos of famous brands, interview questions of Microsofts ... are the most popular scientific news in the past week.