Dating to 650 million years ago, evidence of primitive sponges pushes the fossil record back by about 70 million years.
Source:
http://news.discovery.com/animals/oldest-animal-fossils-sponge.html
Dating to 650 million years ago, evidence of primitive sponges pushes the fossil record back by about 70 million years.
Source:
http://news.discovery.com/animals/oldest-animal-fossils-sponge.html
As our telescopes grow more powerful, astronomers are uncovering objects that defy conventional wisdom.
The latest example is the discovery of a planet-like object circling a brown dwarf. It's the right size for a planet, estimated to be 5-10 times the mass of Jupiter. But the object formed in less than 1 million years -- the approximate age of...
Source:
http://www.sciencedaily.com/releases/2010/04/100409144354.htm
Evidence for the existence of Earths magnetic field has been pushed back about 250 million years, new research suggests.
The field may therefore be old enough to have shielded some of the planets earliest life from the suns most harmful cosmic radiation.
Source:
http://www.wired.com/wiredscience/2010/03/earths-magnetic-field-is-35-billion-years-old/