john rummel | scienceinfo.net

Prohibited areas on Mars
Most areas of Mars have a harsh environment for life on Earth.
No longer a movie, the risk of alien bugs coming to earth is real
Bacteria or germs in other planets may cling to the spacecraft or hide in specimens brought to Earth, and may threaten life on Earth.
Aliens follow the spacecraft to Earth?
According to The Sun, Jupiter's moon Europa is home to a cold, harsh climate, but life can also exist.