Discovering life on meteorites

The US scientists affirmed that the trace found in the ALH84001 specimen is microscopic fossil, proving life can travel across the universe on "spacecraft" of meteorites.

The assertion is based on the study of chemicals that exist in a meteorite discovered in Antarctica in 1984. According to calculations by scientists, meteorites have "landed" on Earth 13,000 years ago. . Scientists believe that meteorites are the remains of an explosion caused by a comet or an asteroid.

In 1996, NASA made a big sound when it confirmed that the Allen Hills (ALH) 84001 rock, which traces creatures from Mars. Published photos show that fossilized fossils are very prominent.

However, the excitement did not last long. Other scientists have questioned whether meteorite samples were contaminated. They also argue that the heat generated when meteorites are blown into space may have created a misleading mineral structure that is microscopic fossil organisms.

The meteorite found in 1984 was named ALH84001, also known as the Allen Hills fossil.

Super fossils on meteorite were found in 1996.

New studies were carried out by Dr. Kathie Thomas-Keprta and members of the Johnson Space Center in Houston, Texas, using advanced techniques with high resolution electron microscopes, rather than work. technology of 13 years ago.

They found on crystalline meteorites and small particles of Mandehit, the chemical found in some bacteria on the earth. This substance interacts much with water and has more biological characteristics than geology.

Dr. Dennis Bazylinski, US University of Nevada, Las Vegas, who reviewed the published research results of Dr. Thomas-Keprta's group, said: 'I am interested in the organizational structures in meteorites. the structure is similar to the structure of bacteria on the earth so much " .