A few hundred thousand billion free-floating, Earth-sized planets may exist in the space between stars in the Milky Way, argues an international team of scientists in Astrophysics and Space Science.
Because it's required for astronomy claims this decade, they make note that those planets could have alien life.
The scientists have proposed that these life-bearing planets originated in the early Universe within a few million years of the Big Bang, and that they make up most of the so-called 'missing mass' of galaxies. They calculate that such a planetary body would cross the inner solar system every 25 million years on the average and during each transit, zodiacal dust, including a component of the solar system’s living cells, becomes implanted at its surface. The free-floating planets would then have the added property of mixing the products of local biological evolution on a galaxy-wide scale.
Credit: Professor Chandra Wickramasinghe, Director of the Buckingham Centre for Astrobiology at the University of Buckingham
Since 1995, when the first extrasolar planet was reported, interest in searching for planets has reached a feverish pitch. The 750 or so detections of exoplanets are all of planets orbiting stars and there have been no realistic potential candidates for alien life. The possibility of a much larger number of planets was first suggested in earlier studies where the effects of gravitational lensing of distant quasars by intervening planet-sized bodies were measured.
Recently several groups of investigators have suggested that a few billion such objects could exist in the galaxy. The new research has increased this grand total of planets to a few hundred thousand billion (a few thousand for every Milky Way star) - each one harboring the legacy of ancient cosmic primordial life.
Citation: Wickramasinghe NC et al (2012), 'Life-bearing primordial planets in the solar vicinity', Astrophysics and Space Science, DOI 10.1007/s10509-012-1092-8
- PHYSICAL SCIENCES
- EARTH SCIENCES
- LIFE SCIENCES
- SOCIAL SCIENCES
Subscribe to the newsletter
Stay in touch with the scientific world!
Know Science And Want To Write?
- Traditional Medicine: Thunder God Vine As Potential Obesity Treatment
- Could Better Psychology Tests Have Predicted The Germanwings Suicide Crash?
- Numenta And IBM To Build Biologically Inspired Intelligent Machines.
- Australopithecus Deyiremeda: New Human Ancestor In Ethiopia
- Mystery Of Morgellons - Disease Or Delusion - Scientific Hypothesis Of Connection With Lyme Disease
- "Boys With Toys" - Was It Sexist?
- Antidepressants More Effective Than Assumed
- "So about radiating black holes, see http://www.buffalo.edu/news/releases/2015/04/006.html About..."
- "Thanks, glad this helps. I can do a search for it. First it seems that Lyme disease itself is surely..."
- "Wouldnt that be nice. My guess is the same reason medical science is doing so little to nothing..."
- "Robert, I'd love to hear your comments as to Plum Island and the idea of it being related to Lyme..."
- "Excellent article! For not having Morgellon's or personally knowing someone that does you sure..."
Books By Writers Here