To put a human on Mars by the 2030s, a stated goal of NASA, the space agency must solve many difficult problems, including protecting the astronauts making the six-month journey (one-way) from exposure to the sun’s deadly radiation (15 times the annual limit for a nuclear plant worker). In the meantime, robot probes will carry the day. NASA’S Insight is about to land on Mars, exploring the planet’s insides with sound and radio waves.
37 Number of extra minutes in the Martian day beyond Earth's 24hours. By comparison. a day on jupiter lasts about 10 hours and a day on Venus abput 116days.