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Venus was 0.7205 au from the Sun on the day of transit, decidedly less than average. [9] Moving far backwards in time, more than 200,000 years ago Venus sometimes passed by at a distance from Earth of barely less than 38 million km, and will next do that after more than 400,000 years.
The timeline of discovery of Solar System planets and their natural satellites charts the progress of the discovery of new bodies over history. Each object is listed in chronological order of its discovery (multiple dates occur when the moments of imaging, observation, and publication differ), identified through its various designations (including temporary and permanent schemes), and the ...
First extended (multi-year) orbital exploration of Venus (from 1978 to 1992). USA (NASA) Pioneer Venus Orbiter: 5 March 1979: Jupiter flyby (closest approach 349,000 km) Encounters with five Jovian moons. Discovery of volcanism on Io. USA (NASA) Voyager 1: 1 September 1979: First flyby of Saturn. First photograph of Titan from deep space. USA ...
Careful observations of the 1769 transit of Venus allowed astronomers to calculate the average Earth–Sun distance as 93,726,900 miles (150,838,800 km), only 0.8% greater than the modern value. [291] Uranus, having occasionally been observed since 1690 and possibly from antiquity, was recognized to be a planet orbiting beyond Saturn by 1783. [292]
Approximate sizes of the planets relative to each other. Outward from the Sun, the planets are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. Jupiter's diameter is about 11 times that of the Earth's and the Sun's diameter is about 10 times Jupiter's. The planets are not shown at the appropriate distance from the Sun.
At their closest point, Jupiter and Venus will be just half a degree apart – about the diameter of a full moon – despite being more than 600 million km (400 million miles) away from each other ...
This photo, and many other images that have been released from Juno's extended mission, employs color enhancement to help visualize the depth between the layers of clouds in Jupiter's deep atmosphere.
Entered orbit five years after failed orbit insertion on 7 December 2010. Continuing mission to study the atmosphere of Venus. [71] Juno: Jupiter 5 August 2011 4 July 2016 entered orbit: 1,795 days (4 y, 10 m, 29 d) First solar-powered Jupiter orbiter, mission to study Jupiter's interior and magnetic environment. [72]