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Connecting the Dots:
New Forms of Life
The search for new forms of life has a new twist. NASA's
scientists, Felisa Wolfe-Simon, reports that a bug she found can not only
survive on arsenic, but even uses it to make parts of it's DNA. Others
scientists are debating if this, in fact, qualifies it as a new life form.
Results such as the ones in the NASA report, are frequently becoming new items,
before being properly criticized by the scientific community.
The search for new life extends far beyond Earth. Carl Sagan and Stephen Hawking endorse the argument that it would be probable for life to exist somewhere other then Earth. Suggested locations today include Venus and Mars. It has also been suggested Jupiters moon Europa and Saturn's moons Titan and Enceladus and newly found, extra solar planets.
Astronomers are convinced that our solar system and others will be found to be well-populated by alien life.
Indirect evidence from rovers on Mars
seems to show primitive life exists there now! Also, here on Earth on Martian
meteorite is thought to show a fossilized bacteria-like life form.
The Hubble Space Telescope has helped establish that there are at least 125 billion galaxies in the Universe. This and today's knowledge about the abundance and distribution of life's chemical building blocks in space have led to a startling conclusion. There are likely over 6 billion life-supporting planetary systems.
Man's search for life, other then we know it, is often in the news. We live in an exciting time of discovery.