Yes, folks, it is possible that pathogens can come from space—not from a Science Fiction Novel, either.
GOOGLED:Some viruses can survive in space-like conditions, such as low pressure, low temperature, and interstellar radiation. These viruses can include:
Tobacco mosaic virus: Can be crystallized to protect it from cold, desiccation, and vacuum. It has survived simulated cosmic rays that are equivalent to 250 years of exposure.
Poliovirus: Has remained infectious after exposure to space-like environments during rocket and high-altitude balloon rides.
Bacteriophage T1: Has maintained infectivity after exposure to space-like conditions.Other viruses that have been found in space include: papillomaviruses, herpesviruses, and adenoviruses.
Some viruses can also become reactive during spaceflight due to stressors, such as latent viruses like herpes. However, one analysis suggests that pathogenic viruses are unlikely to cause significant health problems on short-term space missions.