World UAE's 'Hope' probe to be first in trio of Mars missions
Nasa's Perseverance rover is bearing down on Mars
The biggest, most sophisticated vehicle ever sent to land on another planet , the Nasa robot is being targeted at a near-equatorial crater called Jezero.Touchdown is expected shortly before 2100 GMT on Thursday 18 February.To get down, the Nasa rover will have to survive what engineers call the "seven minutes of terror" - the time it takes to get from the top of the atmosphere to the surface.The "terror" is a reference to the daunting challenge that is inherent in trying to reduce an entry speed of 20,000km/h to something like walking pace at the moment of "wheels down".
The first Arab space mission, the UAE's "Hope" probe, is expected to reach Mars' orbit on Tuesday, making it the first of three spacecraft to arrive at the Red Planet this month.
The United Arab Emirates, China and the United States all launched projects to Mars last July, taking advantage of a period when the Earth and Mars are nearest.
If succesful, the wealthy Gulf state will become the fifth nation to ever reach Mars -- a venture timed to mark the 50th anniversary of the unification of the UAE -- with the China mission due to become the sixth the following day.
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Landmarks across the UAE have been lit up in red at night, government accounts emblazoned with the #ArabstoMars hashtag, and on the big day Dubai's Burj Khalifa, the world's tallest tower, will be at the centre of a celebratory show.
"Hope", known as "Al-Amal" in Arabic, will orbit the planet for at least one Martian year, or 687 days, while the Tianwen-1 from China and the Mars 2020 Perseverance rover from the US will both land on Mars' surface.
Only the US, India, the former Soviet Union and the European Space Agency have successfully reached the Red Planet in the past.
- Risky manoeuvre -
After blasting off from Japan last July, the Hope mission now faces its "most critical and complex" manoeuvre, according to Emirati officials, with a 50-50 chance of successfully entering a Mars orbit.
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The spacecraft must slow significantly to be captured by Martian gravity, rotating and firing all six of its Delta-V thrusters for 27 minutes to reduce its cruising speed of 121,000 kilometres (about 75,000 miles) per hour to about 18,000 kph.
The process, which will consume half of its fuel, will begin on Tuesday at 1530 GMT and it will take 11 minutes for a signal on its progress to reach ground control.
Omran Sharaf, the UAE mission's project manager, said it was a "huge honour" to be the first of this year's missions to reach Mars.
"It is humbling to be in such auspicious and skilled company as we all embark on our missions," he said. "It was never a race for us. We approach space as a collaborative and inclusive effort."
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While the Hope probe is designed to provide a comprehensive image of the planet's weather dynamics, it is also a step toward a much more ambitious goal -- building a human settlement on Mars within 100 years.
While cementing its status as a key regional player, the UAE also wants the project to serve as a source of inspiration for Arab youth, in a region too often wracked by sectarian conflicts and economic crises.
Hope will use three scientific instruments to monitor the Martian atmosphere, and is expected to begin transmitting information back to Earth in September 2021, with the data available for scientists around the world to study.
- Close behind -
China's Tianwen-1, or "Questions to Heaven", has already sent back its first image of Mars -- a black-and-white photo that showed geological features including the Schiaparelli crater and the Valles Marineris, a vast stretch of canyons on the Martian surface.
The five-tonne Tianwen-1 includes a Mars orbiter, a lander and a solar-powered rover that will for three months study the planet's soil and atmosphere, take photos, chart maps and look for signs of past life.
Chinese space probe Tianwen-1 sends first photo of Mars
© CNSA / Reuters The first image of Mars taken by Chinese space probe Tianwen-1. The Chinese space probe Tianwen-1, which is heading towards Mars, sent its first photograph of the red planet this Friday, February 5. The craft, launched in late July from China, is expected on the outskirts of Mars around February 10. This is a black and white image taken about 2.2 million kilometers from Mars by the Chinese space probe Tianwen-1 .
China hopes to land the 240-kilogramme rover in May in Utopia, a massive impact basin on Mars. Its orbiter will last for a Martian year.
Tianwen-1 is not China's first attempt to reach Mars. A previous mission with Russia in 2011 ended prematurely when the launch failed.
NASA's Perseverance, which is set to touch down on the Red Planet on February 18, will become the fifth rover to complete the voyage since 1997 -- and all so far have been American.
It is on an astrobiology mission to look for signs of ancient microbial life and will attempt to fly a 1.8 kilogramme helicopter-drone on another world for the first time.
Perseverance, capable of autonomously navigating 200 meters (650 feet) per day, will collect rock samples that could provide invaluable clues about whether there was ever past life on Mars.
About the size of a small SUV, it weighs a metric tonne, has 19 cameras and two microphones -- which scientists hope will be the first to record sound on Mars.
The mission is set to last at least two years.
UAE's 'Hope' probe sends home first image of Mars .
The UAE's "Hope" probe sent back its first image of Mars, the national space agency said Sunday, days after the spacecraft successfully entered the Red Planet's orbit. The picture "captured the largest volcano in the solar system, Olympus Mons, emerging into the early morning sunlight," it said in a statement. The image was taken from an altitude of 24,700 kilometres (15,300 miles) above the Martian surface on Wednesday, a day after the probe entered Mars' orbit, it said in a statement. Sheikh Mohammed bin Rashid Al-Maktoum, UAE prime minister and Dubai's ruler, shared the coloured image on Twitter.