Is there anything of value on Mars?

Mars, both in terms of temperature and current atmospheric density, is very unsuitable for human survival. However, this kind of planet that seems to have no value, NASA spends hundreds of millions of dollars every year to do scientific research on Mars, so in addition to the Curiosity explorer on the surface of the star, there must be other good things.

First of all, Mars has always been the subject of extraterrestrial life, and although this eye-catching thing should not be ignored, there must be a science behind it. Curiosity used a drill bit at the end of a robotic arm to drill a sample of bedrock on the surface of Mars, the first time a human-designed robot has taken a sample of Martian rock. Curiosity was analyzed by the Mars Specimen Splitter, Chemistry and Mineralogy Analyzer, and the results showed that the samples contained phosphorus, nitrogen, hydrogen, oxygen, and carbon, all of which are key chemical components that support life.

Although there is no life on Mars, it may be possible for us to adapt it to be habitable. A key question for the Curiosity project is whether Mars supports a habitable environment," said Michael, chief scientist for NASA's Mars Exploration Program. "From what we know so far, the answer is yes.

In 1996, the famous astronomer Carl Sagan listed the reasons for the exploration of Mars in a report written at the request of NASA (NASA).

1 Mars is one of the closest planets on Earth that humans can explore.

2 About 4 billion years ago, Mars had a similar climate to Earth, with rivers, lakes, and possibly oceans, for unknown reasons. Exploring the causes of climate change on Mars is of great significance for the preservation of Earth's climatic conditions.

3 Mars has a huge ozone hole, and the sun's ultraviolet rays shine on Mars without obstruction. Probably that's why Corsair 1 and Corsair 2 failed to find organic molecules. The study of Mars will help to understand the extreme consequences for the planet if the Earth's ozone layer disappears.

4 Finding fossils of historical life on Mars is one of the most exciting purposes of planetary exploration, and if found, it means that life can rise on planets in the universe if conditions permit.

5 Find out if there are oases on Mars today, whether there is life on them, and the types of forms in which life exists.

6 Mars exploration is a testing ground for many new technologies, including atmospheric braking, the use of Martian resources to produce oxidizers and fuels, remote-controlled automatics, and remote communication for sampling.

7 Although Antarctic meteorites provide samples of a small number of unknown regions on Mars, only space exploration can provide a full picture of them.

8 In the long run, Mars is a planet that people can move to.

9 For historical reasons, public support and resonance for Mars exploration is incomparable to that of any other space exploration object, and Mars exploration is an ideal project for international cooperation.

There are some living organisms, which is of great significance to the research of scientists, and also gives scientists greater confidence and determination to study another place suitable for human habitation.

It is speculated that Mars has a core with iron as the main component and contains light elements such as sulfur and magnesium, and the proportion of the core of Mars should be smaller than that of Earth.

The outer layer of the nucleus is thickly covered with a layer of magnesium oxide-rich silicate ground and the surface is rocky crust.

Mars has the lowest density of terrestrial planets, only.

Mars is known to be a typical terrestrial planet, so Mars has long been considered by scientists to be one of the most likely planets for extraterrestrial life. But the reality is that the surface of Mars is full of desert sand dunes, and there are frequent dust storms all year round. It can be said that the environment is very harsh.

The soil on the surface of Mars contains a lot of iron oxide, which forms a layer of red and yellow oxide due to long-term exposure to ultraviolet rays. To put it mildly, Mars is like a world full of rust. Because Mars is far away from the sun, the solar radiation energy received is only 43 of that of the earth, so the average temperature on the ground is about 30 degrees Celsius lower than that of the earth, and the temperature difference between day and night can reach hundreds of degrees Celsius.

Near the Martian equator, the maximum temperature can reach around 20. There is also an atmosphere on Mars. Its main component is carbon dioxide, which accounts for about 95%, and very small amounts of carbon monoxide and water vapor.

Mars is smaller than Earth, with an equatorial radius of 3,395 kilometers, half the size of Earth, less than 1 6 times the volume of Earth, and only 1 10 times the mass of Earth.

The interior of Mars, like Earth, has a core, mantle, and crust.

The rotation of Mars is very similar to that of the Earth, with a rotation time of 24 hours, 37 minutes and seconds. A day and night on Mars are slightly longer than a day and night on Earth. Mars orbits about 687 days, and one year on Mars is about two years on Earth.

Mars has two moons. The one that is close to Mars is called Phobos, and the one farther away is called Deimos. Since Mars was considered to be the god of war in Greek mythology, astronomers named its two moons after Ares' two sons, Phops and Dries.