Mars Life? 20 Years Later, Debate Over Meteorite Continues

View of a purported "fossil" in the famous Mars meteorite known as Allan Hills 84001. Doubters argue that the feature is too small to be a sign of Mars life. Credit: NASA
Uncategorized
Share
View of a purported "fossil" in the famous Mars meteorite known as Allan Hills 84001. Doubters argue that the feature is too small to be a sign of Mars life. Credit: NASA
View of a purported “fossil” in the famous Mars meteorite known as Allan Hills 84001. Doubters argue that the feature is too small to be a sign of Mars life.
Credit: NASA

 

By Charles Q. Choi

Twenty years ago, NASA scientists and their colleagues announced they had spotted possible signs of Mars life in a meteorite. The claim ignited a scientific controversy that lingers to this day.

In 1996, researchers led by David McKay, Everett Gibson and Kathie Thomas-Keprta from NASA’s Johnson Space Center in Houston suggested that they might have found microbial fossils in a meteorite from Mars known as Allan Hills 84001 (ALH 84001). (Cosmic impacts on Mars can be powerful enough to blast rocks off the Red Planet, a fraction of which crash on Earth, the moon and other bodies in the solar system.)

The meteorite was first discovered in 1984 by geologists riding snowmobiles through the Allan Hills region of Antarctica. Scientists think ALH 84001 originally formed 4 billion years ago on Mars and landed on Earth about 13,000 years ago.

—Read more here: http://www.space.com/33690-allen-hills-mars-meteorite-alien-life-20-years.html


Uncategorized
No more dissident voices: Succumb to Facebook & Twitter’s demands or get banned (or both)
Share

A recent purge by Facebook and Twitter of a host of independent media sites has pushed thousands of people out of work and has killed one of the most effective forms of expressing political dissent. Related PostsThis Is What Mind Control Looks Like – VIDEOWhen It Comes to Fake News, …

Uncategorized
‘Ancient Egyptian pigment can boost energy efficiency’
Share

A colour developed by Egyptians thousands of years ago can boost energy efficiency by cooling rooftops and walls, and could also enable solar generation of electricity via windows, scientists say. Egyptian blue, derived from calcium copper silicate, was routinely used on ancient depictions of gods and royalty, according to the …

Uncategorized
Father Of World Wide Web Launches Platform Which Aims To Radically Decentralize The Internet
Share

“For people who want to make sure the Web serves humanity, we have to concern ourselves with what people are building on top of it,” Tim Berners-Lee told Vanity Fair last month. “I was devastated” he said while going through a litany of harmful and dangerous developments of the past three decades …