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Eugene Cernan and Harrison Schmitt of the Apollo 17 mission stayed for 74 hours 59 minutes and 40 seconds (over 3 days) on the lunar surface after they landed on 11 December 1972. [38] They performed three EVAs (extra-vehicular activity) totaling 22 hours 3 minutes, 57 seconds. As Apollo commanders were the first to leave the LM and the last to ...
Later flew past Saturn, Uranus and Neptune. Oldest active space probe at 47 years, 5 months, 22 days. Currently studying interstellar medium. At a distance of 136.1 AU (20.4 billion km; 12.7 billion mi) from Earth as of May 2024 [9] 4 Voyager 1: Voyager 1: 5 September 1977 [2] Titan IIIE Centaur-D1T [8] NASA: Flyby Successful
The radio instruments on board found that Neptune's day lasts 16 hours and 6.7 minutes. Neptune's rings had been observed from Earth many years prior to Voyager 2 's visit, but the close inspection revealed that the ring systems were full circle and intact, and a total of four rings were counted. [4] Voyager 2 discovered six new small moons ...
(12 yr, 6 days) Voyager 2 flew by Neptune and was the first spacecraft to visit it. Voyager 1: Jupiter 5 September 1977 5 March 1979 547 days (1 yr, 6 mo, 1 d) Voyager 1 flew by Jupiter and returned the first detailed images. [94] Saturn 12 November 1980 1165 days (3 yr, 2 mo, 8 d) Voyager 1 flew by Saturn. ICE: Comet 21P/Giacobini-Zinner: 12 ...
Neptune has long been known to have white clouds circling it, but images of the furthest planet in the solar system have shown this changing over time - the most recent image, taken by the Hubble ...
Heinz Stücke has been cycling around the world since 1962. Arthur Blessitt has been walking around the world carrying a 45 lb (20 kg) wooden cross since 25 December 1969, covering 42,279 miles (68,041 km) through 324 countries. As of 13 June 2008, aged 67, he had walked in every country of the world, since when he has returned to some.
Telescope data may have helped researchers figure out why. Four years ago, astronomers noticed the abundant clouds on Neptune had largely disappeared. Telescope data may have helped researchers ...
A similar scenario unfolded in 2004 with Apophis, an asteroid initially projected to have a 2.7 percent chance of striking Earth in 2029. Further observations ruled out an impact. "City killer ...