Jupiter's Travels

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In 2000, the Cassini probe flew by Jupiter on its way to Saturn, and provided higher-resolution images. [173] Outside the layer of metallic hydrogen lies a transparent interior atmosphere of hydrogen. At this depth, the pressure and temperature are above molecular hydrogen's critical pressure of 1.3 MPa and critical temperature of 33 K (−240.2 °C; −400.3 °F). [79] In this state, there are no distinct liquid and gas phases—hydrogen is said to be in a supercritical fluid state. The hydrogen and helium gas extending downward from the cloud layer gradually transitions to a liquid in deeper layers, possibly resembling something akin to an ocean of liquid hydrogen and other supercritical fluids. [65] :22 [80] [81] [82] Physically, the gas gradually becomes hotter and denser as depth increases. [83] [84]

Davis, Andrew M.; Turekian, Karl K. (2005). Meteorites, comets, and planets. Treatise on geochemistry. Vol.1. Elsevier. p.624. ISBN 978-0-08-044720-9. Weitering, Hanneke (January 10, 2018). " 'Totally Wrong' on Jupiter: What Scientists Gleaned from NASA's Juno Mission". space.com. Archived from the original on November 9, 2020 . Retrieved February 26, 2021. Jupiter is a gas giant, being primarily composed of gas and liquid rather than solid matter. It is the largest planet in the Solar System, with a diameter of 142,984km (88,846mi) at its equator, giving it a volume 1,321 times that of the Earth. [2] [38] Its average density, 1.326g/cm 3, [d] is lower than those of the four terrestrial planets. [40] [41] Composition Li, Liming; Jiang, X.; West, R. A.; Gierasch, P. J.; Perez-Hoyos, S.; Sanchez-Lavega, A.; Fletcher, L. N.; Fortney, J. J.; Knowles, B.; Porco, C. C.; Baines, K. H.; Fry, P. M.; Mallama, A.; Achterberg, R. K.; Simon, A. A.; Nixon, C. A.; Orton, G. S.; Dyudina, U. A.; Ewald, S. P.; Schmude, R. W. (2018). "Less absorbed solar energy and more internal heat for Jupiter". Nature Communications. 9 (1): 3709. Bibcode: 2018NatCo...9.3709L. doi: 10.1038/s41467-018-06107-2. PMC 6137063. PMID 30213944.While those who choose to explore the world by motorcycle spend plenty of time planning adventures, big and small, nothing could prepare Ted for the challenge of returning home.

As an author, Ted Simon is an honest as they get. Jupiter’s Travels isn’t a tale of macho bravado but is instead an insight into what happens when a man opens himself up to the world – the loneliness, the friendships, the breakdowns, the loves and the losses. Putting your vulnerabilities down on paper for the world to scrutinise isn’t an easy task. I ask Ted how he dealt with this challenge during such a tumultuous time in his life. In addition to its moons, Jupiter's gravitational field controls numerous asteroids that have settled around the Lagrangian points that precede and follow the planet in its orbit around the Sun. These are known as the Trojan asteroids, and are divided into Greek and Trojan "camps" to honour the Iliad. The first of these, 588 Achilles, was discovered by Max Wolf in 1906; since then more than two thousand have been discovered. [211] The largest is 624 Hektor. [212] A tightly-clustered group of retrograde-orbiting moons that averages 23,404,000km from Jupiter with an average inclination of 165 degrees. [204] Encyclopedia - the brightest bodies". IMCCE. Archived from the original on July 24, 2023 . Retrieved May 29, 2023. Wall, Mike (May 26, 2017). "More Jupiter Weirdness: Giant Planet May Have Huge, 'Fuzzy' Core". space.com. Archived from the original on April 20, 2021 . Retrieved April 20, 2021.The European Space Agency plans to launch its JUpiter ICy moons Explorer (JUICE) mission to Jupiter in June 2022. JUICE will rely on gravity assists from Venus and Earth to make the 7.6-year cruise to the giant planet.

During the 1660s, Giovanni Cassini used a new telescope to discover spots and colourful bands in Jupiter's atmosphere, observe that the planet appeared oblate, and estimate its rotation period. [151] In 1692, Cassini noticed that the atmosphere undergoes a differential rotation. [152] Do you have any advice for those planning to set out on a long ride? Scale down expectations. Carry as little as possible. Go slowly. Have faith and a sunny disposition. It’ll work out. Just take reasonable care and don’t talk too much. Dignified reticence works well. Shu, Frank H. (1982). The physical universe: an introduction to astronomy. Series of books in astronomy (12thed.). University Science Books. p. 426. ISBN 978-0-935702-05-7. Because the orbit of Jupiter is outside that of Earth, the phase angle of Jupiter as viewed from Earth is always less than 11.5°; thus, Jupiter always appears nearly fully illuminated when viewed through Earth-based telescopes. It was only during spacecraft missions to Jupiter that crescent views of the planet were obtained. [138] A small telescope will usually show Jupiter's four Galilean moons and the prominent cloud belts across Jupiter's atmosphere. A larger telescope with an aperture of 4–6 inches (10–15cm) will show Jupiter's Great Red Spot when it faces Earth. [139] [140] History Pre-telescopic research Model in the Almagest of the longitudinal motion of Jupiter (☉) relative to Earth (🜨)Solar Nebula Supermarket" (PDF). nasa.gov. Archived (PDF) from the original on July 17, 2023 . Retrieved July 10, 2023. In both the ancient Greek and Roman civilizations, Jupiter was named after the chief god of the divine pantheon: Zeus to the Greeks and Jupiter to the Romans. [17] The International Astronomical Union formally adopted the name Jupiter for the planet in 1976, and has since named its newly discovered satellites for the god's lovers, favourites, and descendants. [18] The planetary symbol for Jupiter, , descends from a Greek zeta with a horizontal stroke, ⟨Ƶ⟩, as an abbreviation for Zeus. [19] [20] Fortunately, I had the book to write, so that kind of saved me in a way because I had to focus on the book, so it was a steadying influence, but in every other respect I was quite wild. And then the book suddenly became very successful and that also kind of threw me off a bit. But I don’t know that I can say anything very quotable about it.”