Popular movies portray travel in space as just being a matter of solving simple propulsion problems. The truth is that cosmic radiation is now better understood as a huge risk to space travel. In Scientific American (February 2017, page 54) Charles Limolihas wrote an excellent scientific discussion of the dangers of cosmic radiation.
Galactic cosmic rays are charged atomic nuclei flying at nearly the speed of light, probably coming from the supernova remnants of dead stars. Our Sun generates a great amount of radiation, but the cosmic rays are much more of a hazard. When these atomic nuclei hit molecules in our body, they ionize atoms, knocking electrons off the atoms and causing the atoms to become charged. These charged atoms hit other atoms, and there is a domino effect that is greatly magnified because of the extra energy involved. In human bodies, there are clusters of damage from such radiation, and just trying to duplicate the process in the laboratory has turned out to be incredibly difficult. Limolihas and his fellow researchers have shown that there is a much greater effect on brain tissue than anyone imagined.
The Earth is designed to handle this huge radiation by having two levels of shielding. The Earth’s magnetic field sweeps galactic cosmic rays away from the areas of the planet where most people live, and the atmosphere stops much of the rest. The amount of cosmic radiation we receive on the surface on Earth’s surface is relatively harmless. When you travel in space beyond Earth’s magnetic field, you, have virtually no protection, and that is going to be a huge challenge for space engineers to solve.
Every time some unusual signal from space is discovered, we see headlines in newspapers about aliens being the source of the signal. In August of 2016, reports came out of a radio telescope in Russia known as the RATAN-600 that had picked up a strong signal in the 11 gigahertz band. This was coming from a star known as HD 164595 and was first detected in 2013. Since that time the RATAN telescope and SETI have listened for repeat signals, but none have been detected. Headlines in the media have been things like “Baffling Alien Signal Detected.” Dr. Eric Korpela who works with SETI says, “There’s always the problem that scientific vocabulary is different from the public vocabulary. Detection, to me, means something was detected. To the public, it may translate as ‘We found aliens.’” It turns out that the signals have several possible natural explanations, none of which involve aliens.
The question remains as to why the public is so obsessed with the theme of aliens. We have pointed out repeatedly that finding life in space doesn’t have anything to do with the existence of God. If God chose to create life in other places for reasons we don’t fully understand, that is no issue. The Bible deals with humans and our existence on Earth. It is becoming obvious that there are no higher forms of life anywhere close to us, so the question is moot. This is not a question that has implications for the existence of God or the credibility of the Bible.
Chances are you have seen the movie The Martian or the National Geographic TV series on Mars, with the hypothetical first colonization of the red planet. Politicians have jumped into the popular hysteria by making proposals about establishing human occupation of the planet. Some wealthy private companies are proposing to offer trips to Mars.
There is nothing in the Bible that would attempt to restrict humans from leaving Earth. By the same token, there is no encouragement to do so. What the general public does not seem to understand is that God incorporated an incredible number of design features into the Earth for us to be able to live here. We have discussed those features over and over in our printed publications, in our Dandy Designs series, and also on our Facebook page. When you don’t have those design features available, human life becomes very tentative.