The last few decades have seen remarkable progress in our ability to safely launch manned craft into the black abyss of space, boosted in recent years by the growing involvement of commercial space enterprise, such as SpaceX and Blue Origin. With it has come a rising desire to work towards the establishment of longer-term human settlements in orbiting space stations and on the Moon and Mars. Recent experiments, although methodologically limited, have demonstrated that frozen human sperm samples are not affected by the microgravity conditions encountered in spaceflight, which is an important and positive finding. 

However, life in space is not confronted by microgravity alone, but is also faced with high radiation levels, which may well represent a relevant source of concern when dealing with human reproduction beyond Earth.

Cryopreserved sperm and oocyte samples stored in outer space under these two hostile conditions must survive and maintain viability long enough to generate viable embryos, if they are eventually to result in healthy babies born aboard space stations.  The putative effects of long-term storage of human gametes and embryos under Earth atmospheric conditions have already been investigated. Data from early clinical and experimental studies have shown that background radiation has no deleterious impact on babies created after long-term storage of frozen human embryos and oocytes. Therefore, the next steps should involve similar experiments taking place under the conditions of being in an outer space environment, where radiation levels are far higher than on Earth, before considering the generation of embryos using cryopreserved gametes stored on space stations.

Nonetheless, the risks of reduced viability due to radiation levels and microgravity are not the only concerns related to the cryostorage and shipment of human gametes. There are other risks associated with the cryostorage of biological material, both on Earth and in Space, ranging from the transmission of diseases between samples stored in liquid nitrogen, to unintentional loss due accidental warming. The loss of oocytes and embryos due to major equipment failure has been reported in fertility clinics, with thousands of gametes and embryos being lost worldwide. As reported by assisted reproduction specialist Dr Mina Alikani in 2018, the maintenance of a very low temperature and avoidance of temperature fluctuations are key factors for the safe and long-term cryostorage of human cells and tissues. Additionally, the shipment and handling of cryopreserved biological samples represents another potential hazard for gametes and embryos. Results of research by Casey McDonald and colleagues in 2011, using donated human oocytes, warned of the effects of the ‘inherent perils of shipping’ on the lowering of survival rates, with exposure to elevated ambient temperature and air pressure, vibration or any other physical shock potentially contributing to poorer results. 

Therefore, for the successful transport of biological samples under cryostorage, it is essential that appropriate shipping vessels be used, such as those allowing continuous temperature monitoring, rather than relying on data collected at the final destination.
Big question marks remain as to whether healthy babies can be born following the use of in vitro fertilization technologies performed in outer space. Furthermore, major safety and ethical concerns must be taken into consideration before such a giant leap for humanity is taken. 
​

Article first published on InnovaSpace website
See also article: Assisted reproduction frontiers in outer space

I was delighted to be interviewed recently by The Guardian, a prestigious British newspaper established in 1821. Their article published on the 22nd Jan 2019 features some details about my life and path that led me to being a space doctor, and also a bit about my new UK company, InnovaSpace, and the work we do.  
The InnovaSpace outreach projects, such as Kids2Mars and Project Valentina, were highlighted for their efforts to spark the interest of the young towards the STEM areas, and to follow careers linked to future space travel and colonies. 

​Do have a read and tell us what you think! The Guardian Article ​

With another year now drawn to a close, I thought it would be interesting to look back on the two very successful InnovaSpace Kids2Mars events that took place in 2018 involving questions asked by children to crew members of Mars analogue missions, one with the MDRS Crew 185 in the Utah desert and the other with the Austrian Space Forum’s AMADEE-18 mission in the Dhofar desert in Oman.

In summary, 53 children from 33 different countries from around the world had the opportunity to ask anything they wanted about travelling to and life on Mars, and very interesting answers came back from analogue astronauts and crew members who spent their time isolated in desert regions, especially chosen for their similarities to the planet Mars. 

Analogue astronauts on this type of mission in general have little spare time, as they are involved in many research activities, so we knew we could not bombard them with a mountain of questions. This in fact also linked well with our aims for the Kids2Mars project, which was to involve children from as many different countries as possible – quantity of countries rather than quantity of questions. With our tagline of Space Without Borders, this aspect was of prime importance, so an end result of 33 countries was very satisfying, especially so considering the diverse range of nations involved, such as Bolivia, Bulgaria, Iceland, Mongolia and Nepal. In fact, we had questions coming from countries in 6 of the 7 continents, just missing out on Antarctica, which for obvious reasons is a little more difficult!

It was interesting to hear how the name of the planet Mars, named after the Roman god of war, was pronounced in the various languages. Certainly, the sound of the word was the same or very similar to the English pronunciation in the majority of cases, however, there were a few exceptions, such as from China, Japan, Nepal, Libya and Indian Tamil. We have extracted the word Mars, where mentioned, from all of the children’s questions and with the invaluable help of our two collaborators from Italy, Fabio Pinna and Mario Mollo, created a short video – we hope you like it!

One thing that has become obvious from all the Kids2Mars activities we have conducted is how much the subject of space and space travel arouses curiosity, and how much the young people involved in the lectures and creative pursuits have done so with great enthusiasm and interest. In our view, this is exactly why outreach activities linked to Mars or the Moon or astronauts, in fact anything involving space, can be used as a tool to capture the attention and interest of children, motivating them to give more consideration to the STEM areas of education. Although the adults of today are laying and securing the foundations of human life in space, it is our children who will build on this to become the Space Generation, and perhaps in time, even future Mars colonisers!  

The InnovaSpace team send their wholehearted congratulations to the Chinese National Space Administration (CNSA) for the landing today (Thursday, 3rd January 2019) of their unmanned Chang'e-4 space probe on the far side of the Moon, the first spacecraft to ever land on the ‘dark side’. The probe landed exactly on target in the South Pole - Aitken Basin, which is the Moon's largest and oldest recognised impact crater.

A small lunar rover, called Yutu 2 or Jade Rabbit 2, descended from the lander onto the surface of the Moon, sending the first panoramic images of a landscape that has never been seen from the surface before. All being well, the rover will explore the terrain and perform a number of tasks, including the measurement of ground composition and the use of ground-penetrating radar to probe below the surface.

The first lunar low-frequency radio astronomy experiment will also be conducted, together with an exploration for evidence of water, and an attempt to grow potatoes in a mini biosphere, among other tasks, all of which could reveal much new and valuable information about the Earth's only permanent natural satellite.
"Since the far side of the moon is shielded from electromagnetic interference from the Earth, it's an ideal place to research the space environment and solar bursts, and the probe can 'listen' to the deeper reaches of the cosmos," said Tongjie Liu, deputy director of the Lunar Exploration and Space Program Center for the CNSA.

China became only the third nation to carry out a lunar landing, after the United States and Russia, when it landed a previous lunar rover, Chang’e-3, on the near side of the Moon in December 2013. But Chinese ambitions go much further than landing rovers on the Moon, with reports that they aim to put astronauts on the Moon by 2036 (no human feet have stepped on the lunar surface since 13th December 1972, following the end of the American Apollo missions). Chinese sights are also focused on Mars, with its first Mars probe scheduled to carry out orbital and rover exploration around 2020, and further plans for a fully operational permanent space station by 2022. 
​Well done to everyone at the CNSA and we look forward to hearing more on the progress of the Chang'e-4 mission!

Explanatory point: The far side of the Moon is also known as ‘the dark side’, which is in fact an inaccurate description, as both hemispheres of the Moon receive just as much sunlight as each other. However, the far side can never be seen from Earth due to the Moon rotating at the same speed that it rotates around the Earth, which results in us always seeing the same side. In fact, the two sides of the Moon are actually quite different in appearance, as can be seen in the below images.

This item first featured on the InnovaSpace blog 3/01/2019 - www.innovaspace.org