"Do we have any idea what is pulling on the orbit of Pluto? I have heard several things, from a black hole to a star to a brown dwarf."
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Question
Is there any evidence that panspermia keeps going on nowadays?
There is no evidence that panspermia -- the transport of life to a world by microbes traveling between planets -- has ever happened. It is an attractive hypothesis, especially for possible migration of life from Mars to Earth. We know martian rocks, ejected by collisions, can make it to Earth intact. But the martian rocks we have examined do not contain viable microbes, and we can only guess whether they might have in the past. David Morrison
NAI Senior Scientist
October 2, 2006
- How frequently are questions answered?
- I asked a question but there was no answer?
- Who is the Astrobiologist answering these questions?
- Will I get an email when my question is answered?
- What college courses should I take to become an astrobiologist?
- How can I get a job as an astrobiologist at NASA?
- Have aliens visited Earth? Are UFOs real?
- Is there a planet or brown dwarf called Nibiru or Eris that is approaching the Earth and threatening our planet with widespread destruction?
- Is it true that the Sun will be in the center of the Milky Way Galaxy in December 2012 and that this will cause a pole shift and massive destruction.
- Has NASA discovered life on other worlds?
- Astrobiology Career Path Suggestions
