least for a few years. Of course, no one has tested whether they can survive for thousands of years, but there`s no reason to think they can`t, notes Sleep. ``Conditions are not good for microorganisms, but they`re not bad,`` he adds.
So it is possible that life came from another planet - but did it really happen? So far there is no direct evidence of life on other planets or asteroids, although it is becoming clear that conditions exist, at least on Mars and Europa - one of Jupiter`s inner moons - where microbes that live comfortably in Earth`s harsher climates would have felt at home. As Sleep put its, Mars ``is no more uninhabitable than Antarctica`` - uncomfortable for humans, but perfect for some microbes.
Conclusive evidence for or against the theory only will come when scientists can examine samples from other planets and asteroids, something that is still a long way off. But Sleep says he`s not frustrated by the sometimes slow pace of studying early life.
``The origin of life is one of the fundamental problems of science, and it always has been. Living at a time when you can do that, it`s not something I`m going to pass up,`` he says.
Page: 1 2 3 4 Related biology news :1
Contact: Mark Shwartz
. Rensselaer marks the opening of the center for biotechnology and interdisciplinary studies2
. UCSD undergraduates participate in collaborative studies abroad on cyberinfrastructure3
. Scientist honored for studies of genetic influence on chemotherapy, tumor development4
. $5 million grant funds partnership, studies of minority-based issues in reproductive health5
. Synthetic hormone used in contraceptives and HRT produces negative effects in monkey studies6
. $5.5 million awarded to tree-ring research and climate studies7
. Pancreatic cancer blood test & gene studies show promise8
. Two studies weigh in on low-carb diets9
. Animal studies show promise treating severe chronic pain10
. New studies show Curves Program raises metabolic rate in overweight and sedentary women11
. Florida Tech researchers win $912,700 grant for cell studies