With the NASA scientists finally admitting to what we already knew, that Mars has life. Also what other scientists believe what happened to Mars billions of years ago. The only real conclusion is...

The resulting Borealis basin is elliptical in shape and over 10,000 kilometres long, according to the studies, but is partially obscured by the massive Tharsis volcanic mountain range, which cuts across the middle of the planet.
Scientists have debated whether the odd surface trend was the result of convection beneath the planet's surface or an external force.
Writing in Thursday's edition of Nature, three groups of scientists provide the most compelling evidence to date that an outside impact was responsible, suggesting an asteroid slammed into the planet some four billion years ago, around the same time a massive Mars-sized body is believed to have collided with the Earth and helped form our moon.
One of the three studies - from the Massachusetts Institute of Technology and NASA's Jet Propulsion Laboratory - suggested the asteroid hit Mars at an angle, leading to the elliptical shape of the basin, instead of the circular shape common with many impact craters.
Another study led by the California Institute of Technology calculated that a 1,600-kilometre-wide object travelling 21,000 km/h would have hit the planet at an angle between 30 and 60 degrees, and caused an explosion equal to 75 trillion to 150 trillion megatons of dynamite.
A third study by researchers from the University of Santa Cruz found the impact model is consistent with the differences in planetary crust thicknesses between the planet's two hemispheres.
An accompanying commentary from Walter Kiefer, a staff scientist at the Lunar and Planetary Institute in Houston, said the three studies did not provide conclusive evidence but, taken together, strengthen the impact hypothesis.
"The betting odds have gone up a lot in favour of the impact model," said Kiefer.

This image released by Penn State University shows colonies of Chryseobacterium greenlandensis, a form of extreme life, growing on an agar medium in a petri dish. A single colony contains millions of cells and is large enough to be seen with the naked eye. NASA's Phoenix lander is looking for conditions near Mars' north pole that could support primitive life similar to extreme life on Earth.(AP Photo/Penn State University)