NASA’s Mars Curiosity to rely on jet-powered “sky crane” to land on the Red Planet
Αναρτήθηκε από τον/την satyrikon στο Αυγούστου 3, 2012
Originally posted on National Post | News:
6 things you may not know about Mars
It’s called the red planet because the landscape is stained rusty-red by the iron-rich dust
Its gravity is only 38 per cent that of Earth. So if you weigh 68 kilograms (150 pounds) on Earth, you would weigh 26 kilograms (57 pounds) on Mars
Mars’ temperatures can range from 27 degrees Celsius at its equator to -199 -128 Celsius at its poles
Mars’ atmosphere is mostly carbon dioxide with traces of nitrogen and argon. Earth’s atmosphere is a mixture of nitrogen, oxygen and other gases
A day on Mars lasts 40 minutes longer than a day on Earth
Mars’climate 3.5 billion years ago is believed to have been warm and wet, like early Earth
PASADENA, Calif., — By the time the robotic Mars laboratory dubbed Curiosity streaks into the thin Martian atmosphere at hypersonic speed on Sunday night, the spacecraft will be in charge of its own seven-minute final approach to the surface of the Red Planet.
With a 14-minute delay in the time it takes for radio waves from Earth to reach Mars 248 million kilometres away, NASA engineers will already have given Curiosity the last commands of its voyage through space.