The Alpha Road

The Science of Life

Tag: DLR

A Practical Application of Astrobiology Research

Being confronted with the “what’s the point?” type of a question is not a rare thing for astrobiologists. People wonder why should anything be done in space since there are so many important issues that remain unresolved on earth itself today. I am not going to argue the point of the unwavering spirit of human exploration, nor the benefits of colonization of other worlds. There are entire books written on the subject and I believe the concepts are not difficult to grasp.

What I am going to do now is provide a very specific example of exactly how astrobiological research can be directly beneficial for the well being of human life on earth. Thus even if one ignores the “spiritual” and philosophical reasons behinds the science, there are still many reasons as to why the field show grow.

The topic of one of my internships (at DLR, the German Aerospace Center) was connected with the field of Planetary Protection. The concept was discussed in one of my previous posts. One of the many methods used nowadays for sterilization of spacecraft is plasma (a mixture of several noble gases through which an electrical current flows). Many factors, such as release of oxygen radicals, prove to be detrimental to even the hardiest organisms known on Earth, thus effectively reducing the amount of microorganisms present on the spacecraft. The implications of such research on fields such as medicine are enormous. Nowadays there is a search for new sterilizing procedures. Those that can be executed at low temperatures are especially convenient since much of the modern surgical equipment in hospitals is made from plastic, thus is prone to damage from intense heat.

By developing new methods for reducing interplanetary transfer of organisms, advances which will decrease the risk of infections in hospitals is achieved too.

Further reading:

An interesting article from ESA

Planetary Protection

The concept of planetary protection is a relatively recent one. It was introduced soon after the first satellites were launched to space (and some time before we had the capability to send spacecraft to other bodies in the Solar system, the Moon etc.). It mainly concerns the biological contamination of planets and their satellites by organisms from the Earth. Such contamination may likely result in either disruption of a putative alien biosphere, its complete annihilation and/or substitution with terrestrial life (which would in tern confuse future astrobiology missions to that object). At present efforts in the field are mostly focused on sterilization of spacecraft (usually high-temperature heat or plasma sterilization, the latter one being a main topic of my previous research). Recently, however, sample-return missions were envisioned which will introduce the planetary protection concept in full together with new aspects.

See my recent post about the russian Phobos-Grunt mission.

Reference:

1. Mileikowsky C, Culcinotta F (2000). Risks threatening viable transfer of microbes between bodies in our solar system. Planetary and Space Science. Volume 48, Issue 11, September 2000, Pages 1107-1115.

LIFE Module of the PHOBOS-GRUNT Mission – An Opinion

The Russian SER (Sample Return Mission) to Phobos (one of the two satellites of Mars) is the first of its kind and I will write a separate blog post about it and will use the opportunity to introduce the concept of planetary protection. Some of my former colleagues at DLR (the German Aerospace Center) of mine contribute to the so called LIFE (Living Interplanetary Flight Experiment) module which is to be flown together with the mission. Read the rest of this entry »
Follow

Get every new post delivered to your Inbox.

Join 30 other followers