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Anonymous users2024-02-11If scientists can find water on Mars, humans could land on the Red Planet in 20-30 years, the head of NASA's planetary ground exploration team said on Wednesday. Two "robotic geologists" powered in part by solar, the Rover Mars Rover (MER), have traveled three miles (5 kilometers) on the surface of Mars and into craters since January, sending back a large amount of data on the composition of what scientists have long believed to be Earth's sister planets.
Asked when astronauts will reach Mars, MER mission manager Arthur Thompson said his guess is 20-30 years at the earliest, if landing on Mars is the preferred project. Two MER robots, Spirit and Opportunity, have found evidence that Mars had a large amount of water long ago, which is very important for scientists who want to know that life was or still exists on Mars. Without water, the dream of sending astronauts to Mars, imagining Mars as a planet with sandstorms, rust-colored rocks, red skies and blue sunsets, would not be possible.
The process of landing on Mars takes 11-12 months, astronauts cannot carry enough water, and too much water will consume fuel, and water is also needed to cool the spacecraft.
Scientists have found a canyon on Mars that "makes the Grand Canyon a small canyon" and that liquid water may still be present, Thompson said. He said there were signs of water seeping out from one side of the canyon and evaporating as it flowed, and they believed the phenomenon was continuing. The three artificial satellites currently orbiting Mars are constantly gathering information, and Thompson said that if water exists, it is believed that the chances of finding life will be greatly increased.
Bush wants to build a permanent space base on the moon and send astronauts to Mars at some point in the future. NASA's vision is to send at least one atomic-powered robot to Mars and establish a Mars Science Laboratory (MSL) by 2009. NASA director Sean O'Keefe said last week that it would cost at least $2.2 billion to get the shuttle back into space after the Columbia crash.
Thompson said NASA has ample budget funding ......But they almost convince us that they want to carry out the MSL program, which occupies a very high place on its agenda, and his understanding is that the Mars Program Office will be funded in the coming years. The cost of a MER is $800 million, but the cost of the MSL is unclear. Thompson said the MER robot is scheduled to end its mission in April this year, but is doing well now and will be available until next year.
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Anonymous users2024-02-10The unknown is always full of uncertainties, and it is a bit difficult to get a clear answer.
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Anonymous users2024-02-09687 days. It has a diameter of about 53% of the Earth and a mass of 14% of the Earth. The inclination angle of the axis of rotation and the rotation period are similar to those of the earth, and one revolution is about twice the time of the earth's revolution. The orange-red exterior is hematite (iron oxide) on the surface.
Mars is called "Luminous Star" in ancient books in China, and Mars is called "Mars Star" in ancient Western (ancient Rome), which is the only guardian planet of the 12 zodiac signs Aries, not the guardian planet of Scorpio.
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Anonymous users2024-02-08The orbital period of Mars is 687 days.
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Anonymous users2024-02-07The closest distance between Mars and Earth is about 55 million kilometers.
The speed of the sound is about 340 meters and seconds, which is kilometers and seconds, and the sound travels 55 million kilometers and calculates 55 million kilometers.
The speed of light is about 300000 kilometers in seconds and light travels 55000000 300000 = seconds.
If a person walks, even if the speed of 1 meter and a second is a kilometer second, 55,000,000 years.
This is the closest distance, the orbit is different at different times, the farthest distance of the two stars is 400 million kilometers, you can calculate the dismantling of things.
It depends on how much you spend on double eyelid surgery, generally the maintenance effect of this surgery is about 3-5 years, if the price is higher at that time, the natural time is longer.
According to the latest chronology:
Western Zhou Dynasty (1046-771 BC), a total of 275 years, the "Bamboo Book Chronicle" is also called "As for the Youwang, a total of 275 years". >>>More
The Nobel Prize has been around for 121 years. Because the Nobel Prize has been held since October 1901, if you count the 2022 year, it will be 121 years.
The concept of British statehood is a very broad concept, the first aborigines to settle in Britain are the Celts, that is, the main ethnic group of today's Scotland, after Caesar conquered Britain, the Romans once ruled England, soon after the Romans withdrew, the Nordic Germanic peoples from Scandinavia, the Anglos, Saxons and Jutes invaded, settled, and gradually integrated, initially forming an Anglo-Saxon dominated England pattern. In 1066, the Normans from France (Frenchized Nordic Vikings) conquered England under the leadership of Duke William the Conqueror, and the English nation was further integrated, in the 12th century, Richard the Lionheart began to use the St. George's Cross flag, which is today's England flag, the long-legged Edward ** Wales in the 12th century, England merged with Scotland in the early 17th century, the United Kingdom of Great Britain appeared, the England cross flag merged with the Scottish Andrew flag, and the rice flag appeared, which basically laid the pattern of modern Britain, In 1800, the United Kingdom annexed Ireland, and in 1801, the rice flag joined the flag of the Irish ruler of the Fetznod family, which is the British flag we see today, and the United Kingdom of Great Britain and Northern Ireland was formally established in the same year, so it is difficult to say when the United Kingdom was founded, not only the concept of nation-building is divided into a broad and narrow sense, but the concept of Britain also has a narrow sense of England and a broad sense of the United Kingdom, and the United Kingdom still does not have a unified founding standard and national holiday (instead of the birthday of the king or queen). If we have to count the date of the founding of the United Kingdom, it can only be counted as the official establishment of the United Kingdom of Great Britain and Northern Ireland in 1801.
Stars also have their own life histories, from birth, growth, aging, and eventually death. They come in different sizes, colors, and evolutionary journeys. The star's connection to life is not only manifested in the fact that it provides light and heat. >>>More