Liv mellan stjärnsystem

Inte som sciencefictions utomjordingar

Kanske kommer en dag när det blir möjligt att extremt mycket snabbare än idag transportera sig inom universum. Det pågår ständigt forskning för att försöka göra det möjligt. Enorma pengar satsas på rymdforskning och alla nationella makter med utvidgade maktambitioner tävlar i exploateringen av vår rymd. Personligen undrar jag om inte hälften av alla dessa pengar skulle göra mer nytta nedåt i jorden istället.

Nedan artikel på BBC är väldigt intressant och spännande. Sannolikheten att liv redan rör sig mellan olika planetsystem är stor. Du vet väl att människan ursprungligen i princip byggdes upp av bakterier? Så är det. Detta faktum talar för att det någonstans i vårt universum finns avancerat liv. Inte kan väl jorden vara en unik ”cancer” i universums komplexa och oändliga system? 

"Long distance space travel is still beyond human reach. But other forms of life may already be hitching a ride from one planetary system to another."

"In 2019 I participated in a Breakthrough Discuss conference in Berkeley on "Migration of Life in the Universe". I was puzzled by the conference theme: we know almost nothing about life in the Universe, I thought, so how we could talk about migration of life? But recalling the observation of 'Oumuamua, I did participate and I am glad I did. I was surprised by the scientific quality of the talks and by the extreme fascination of the topic. Life probably doesn't need massive, rocky starships to move from one planetary system to another. Considering the minuscule size of bacteria, the smallest living organisms we know, or even viruses, which can live and reproduce inside bacteria, we can also imagine other mechanisms suitable for this kind of transport."

"At the same time we have dramatically developed our ability to decode and manipulate DNA, up to the creation of the first simplified genomic structures, derived from living organisms and able to reproduce. We are now talking about synthetic life, built around human-designed DNA, a field with huge development prospects. Therefore, it is likely that the creation of the complex molecular structures needed for life or the confirmation of the existence of islands of genomic stability in the evolution of viral and bacterial species are objectives that, in future, will be within our reach. At that point, we will have another tool for understanding how life on Earth developed."

"Who knows? Perhaps we will discover that aliens are particular biological life forms that have lived with us all along."

https://www.bbc.com/future/article/20231006-how-life-might-hitchhike-its-way-through-the-galaxy