After months of diligent rover exploration on the Red Planet, the release of the first results of scientific studies shows that a huge lake and an ancient river in NASA's robot landed on Mars.
NASA seems to have cleverly chosen the "Perseverance" landing site. The astronaut landed on the floor of the 45-kilometer crater of the Jezero on February 18 (March 1), which according to previous studies has hosted a large lake and delta system in the past. Now, according to a new study, photos taken early in the mission of perseverance confirm this. Extensive navigation was able to solve one of the great unknowns of Mars exploration and show that the crater was once a lake. This was always in doubt until we landed on Mars. "
High Resolution Camera Image of the Mars Reconnaissance Orbiter
from the Tropical Lake Delta
Credit: NASA/JPL-Caltech/University of Arizona
Area Suitable for an Outstanding Mission H2>
Perseverance has two main tasks in its $ 2.7 billion mission, which includes searching for signs of ancient microbial life on Mars, as well as collecting and storing specimens of the red planet that will be brought to Earth by another mission in the future.
In addition, perseverance played a major role in the early flights of the Ingenuity helicopter, recording valuable data, including the first sound of a helicopter flying to another planet. Now, however, the genius is tracking its flights to Mars more independently.
- The genius helicopter has completed its fourteenth flight to Mars
Based on data collected by other spacecraft, including the Mars Reconnaissance Orbiter (MRO), NASA considered the crater to pursue the goals of the March 2020 mission and explore the persistent rover. Because orbital images show a fan-like structure on the surface of Mars, which is estimated to be a river delta that flowed into large lakes 3.7 billion years ago and left sediments. These sediments can retain traces of microbes (microorganisms) if present.
"Mastcam-Z" and the "SuperCam" camera have been reviewed.
- Know NASA's perseverance
Clear structure of sedimentary rocks on the Kodiak Hill of
The detachment, identified as Kodiak, is said to be a eroded section of the river delta, according to the mission team. Kodiak images are clearly recorded to show separate layers of sediment.
An option that can only be created by a flowing river, "The Kodiak images clearly refer to the sediment of the river along a delta and lake," said the French National Center for Scientific Research. "These images help us determine the level of the lake, as well as "As perseverance progresses, it allows us to have a scenario of delta formation and lake activity, and to identify suitable layers for analysis and sampling."
M is lower than orbital observations and, according to Mangeld, refers to a stage in the delta just after it began to form.
Tidal lake surface during sedimentation on Kodiak Hill
However, current data cannot predict the onset of tidal evolution prior to sediment deposition in Kodiak, as the associated layers are hidden far away from the delta. But perseverance may be more effective as it crosses the delta. Scientists estimate that the drying of the red planet began about 3.5 million years ago when the planet's global magnetic field disappeared and the bombardment of charged solar particles made its atmosphere more sensitive.
The new update can provide an interesting look at this big change. For example, these persistent photographs show large boulders 1.5 meters wide in the upper layers of the main delta ridge. "Such currents may be due to the movement of glaciers or sudden floods caused by rain," said Mangeld. Be severe, as is the case today in some desert areas of the earth. Regardless of the cause, these sedimentary rocks can point to a very different form that the tide had in the past.
Details of the craters of the Martian Crater Delta
Weiss "The most amazing thing that comes out of these images is the potential opportunity to understand when the crater of an earth-like, habitable ecosystem has become a desolate and barren area today," he said. "These boulders may be signs of this transition that we have not seen elsewhere on Mars." The mission team's goal is to guide a 2.61-kilometer rover to the delta ridge to the point of the delta and to sample the deposits that have been deposited while the lake is inhabited.
This The probe has so far collected and stored two specimens of rock called Rochette. The specimens collected by the perseverance will eventually be brought to Earth by a joint mission of NASA and the European Space Agency. The surface of Mars is currently suspended. Mars is now on the other side of the sun relative to Earth, and such a situation could make it difficult to send orders to robots. According to NASA, the temporary suspension will end on October 16 (October 24). ul>
Cover photo: Graphic design of the ancient river, delta and