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سرب يدعو السعوديين للتدريب على قيادة قطار الحرمين السريع

سرب يدعو السعوديين للتدريب على قيادة قطار الحرمين السريع
sabq.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from sabq.org Daily Mail and Mail on Sunday newspapers.

شبان سعوديون لقيادة قطار الحرمين

شبان سعوديون لقيادة قطار الحرمين
al-madina.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from al-madina.com Daily Mail and Mail on Sunday newspapers.

What is so special about Mars? Research teams in the UAE are finding out

It is also a symbol of how, when it comes to scientific exploration, the world is in this together; Hope was accompanied by China’s Tianwen-1, which entered the Martian orbit on February 10 and Nasa’s rover Perseverance, scheduled to land on February 18. All three missions had to overcome daunting challenges posed by the Covid-19 pandemic, which makes their successes even more significant. The history of Mars missions is riddled with failures. The odds of success are usually 50/50. The first attempt to reach Mars was made by USSR in 1960 with the Mars 1M No 1 mission, which ended in a launch failure. The first country to succeed was the US, with a fly-by mission – Mariner 4 – in which the probe went past Mars in 1965. Nasa s Mariner 9 probe successfully entered orbit for the first time in November 1971 and a month later, the USSR’s Mars 3 was the first lander to successfully land on the planet.

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