The Insight probe is expected to reach Mars this night to explore the interior of the planet and see if it has a solid nucleus.
The Atlas 5 rocket, carrying an "Insight" probe in May, launched into Mars on the first mission to collect information about the planet.
The NASA probe was not launched from Cape Canaveral, Florida, as usual, but from the west coast of the United States.
In a report published by the German newspaper "Welt", the author of the probe "Insight" on the surface of Mars and the difficulties that could prevent the probe from completing this mission.
"It is feared that the probe will not tolerate high heat when it penetrates the atmosphere of the Red Planet," said Tom Hoffman, director of the Insight Mission project at the Jet Propulsion Laboratory. He also expressed his fear of his fall, hoping that the probe would launch its rockets in a timely manner.
The rockets reduced the speed of the probe to 8 km / h before touching the surface of the planet.
The probe is expected to land in the "Elysium Platina" region, which is almost devoid of pits and stones.
"The Insight will land in a new area of Mars that no one has seen," said Jim Singer, a NASA space shuttle spokesman.
The researcher at the Institute of Planetary Research at the Center for Aviation and Space German Tillman Chbon that to discover a planet, should be seen inside.
The German center contributed to the Insight probe project with a tool that penetrates Mars.
The instrument is expected to be dug into the interior of the planet at a depth of up to five meters, then the heat pulses are sent to its front, and the sensors determine the time it takes for the soil cooling process to take place. In this way, scientists will see whether the Martian soil conveys the heat well or not.
Mars does not have a magnetic field at the moment, but it may have had it in the past.
The Insight probe is accompanied by additional probes called the CubeSat that send radio signals to Earth when Insight penetrates Martian atmosphere.