The US space agency has released a "pre-solicitation" for what is expected to be a hotly contested contract to develop a spacecraft to orbit Mars and relay communications from the red planet back to Earth.
'The nation mourns' - Canada leaders react to school shooting
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Овечкин продлил безголевую серию в составе Вашингтона09:40
Трамп высказался о непростом решении по Ирану09:14