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Triple conjunction of Saturn, Uranus and Neptune. [55] 2170 Triple conjunction Mars–Jupiter. [55] 2174 The second full orbit of Neptune around the Sun since its discovery in 1846. 2177 "First Plutonian anniversary" of Pluto's discovery, given its orbit is just under 248 Earth years. 2178 January 28 2182 September 24
A proposed probe that would've flew by trans-Neptunian objects using a gravity assist from Uranus. [139] 5 Pluto Hop, Skip, and Jump: Pluto Hop, Skip, and Jump: N/A N/A NASA: Lander In progress A proposed probe designed to land on Pluto, similar to the concept of the Triton Hopper mission. [145] 6 Pluto Kuiper Express: Pluto Kuiper Express ...
Uranus was the last giant planet without any known irregular moons until 1997, when astronomers using ground-based telescopes discovered Sycorax and Caliban. From 1999 to 2003, astronomers continued searching for irregular moons of Uranus using more powerful ground-based telescopes, resulting in the discovery of seven more Uranian irregular ...
(Correction: An earlier version of this story misstated how far Pluto is from the sun. The correct number is 3.7 billion miles.) ... Mars, Jupiter, Saturn, Uranus, Neptune, Pluto. ...
One spacecraft, Voyager 2, also visited Uranus and Neptune. The nine missions include two, Ulysses and New Horizons, whose primary objectives were not outer planets, but which flew past Jupiter to gain gravity assists en route to a polar orbit around the Sun (Ulysses), and to Pluto (New Horizons).
An alignment of six planets will dazzle in January 2025. Venus, Mars, Jupiter, Saturn, Uranus and Neptune will align in the night sky. "The whole month of January is a great time to see the ...
S/2023 U 1 is the smallest and faintest natural satellite of Uranus known, with a diameter of around 8–12 km (5–7 mi). It was discovered on 4 November 2023 by Scott S. Sheppard using the 6.5-meter Magellan–Baade Telescope at Las Campanas Observatory, Chile, and later announced on 23 February 2024. [1]
From the inner (bottom left) solar system to the outer (top right) solar system, the planets are: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. / Credit: NEMES LASZLO/SCIENCE ...