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solar system

Posted inEditors' Highlights

Solar Properties Rival for Control of Mars’s Bow Shock

by Michael W. Liemohn 9 July 20194 May 2022

While most planetary bow shocks are controlled by the solar wind, at Mars the solar EUV flux is equally important.

An image of the Sun overlaid with magnetic field lines
Posted inNews

Planetary Low Tide May Force Regular Sunspot Sync Ups

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 21 June 201927 March 2023

A regular alignment of the planets—no, it’s not pseudoscience—makes a strong enough tug to regulate the Sun’s 11- and 22-year cycles.

The Tvashtar volcano erupts on Io
Posted inResearch Spotlights

No Underground Magma Ocean on Jupiter’s Fiery Moon?

by E. Underwood 22 May 201911 May 2022

A new study suggests alternative explanations for Io’s unusual magnetic field.

Neptune imaged by Voyager 2 in 1989
Posted inNews

New Tiny Moon of Neptune Discovered

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 20 February 20194 April 2023

The moon’s size and orbit point to it being the remnant of a collision with Neptune’s moon Proteus.

Artist’s conception of Ultima Thule
Posted inNews

New Horizons Spacecraft to Reach Farthest Body in Solar System Yet

Jenessa Duncombe, Staff Writer by Jenessa Duncombe 28 December 20186 January 2023

The flyby of Ultima Thule on New Year’s Day will give us our first glimpse of a mysterious Kuiper Belt object.

Jupiter and its largest moon, Ganymede
Posted inNews

Ten New Moons Discovered Around Jupiter

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 17 July 201827 January 2022

The newly plotted moons of Jupiter include one “oddball” that orbits in the wrong direction and may be the remnant of a head-on collision.

Posted inEditors' Highlights

Anatomy of a Flux Rope Hurtling Through the Solar System

by Michael W. Liemohn 15 May 201827 April 2022

Pancaking and erosion can explain a lot of the structural change in magnetic flux ropes as they fly evolve during their supersonic flight through the inner solar system.

Posted inEditors' Highlights

Fast CMEs Continue to Decelerate in the Outer Heliosphere

by Y. Wang 12 February 201831 May 2022

Most fast coronal mass ejections will be decelerated into ambient solar wind quickly in the inner heliosphere, but some of them continue the deceleration with an even larger amplitude beyond 1 AU.

Researchers examine mudstone in Mars’s Gale crater to unravel the history of liquid surface water
Posted inResearch Spotlights

History of Water on Mars’s Surface Is Longer Than We Thought

by Terri Cook 2 February 20183 January 2023

Curiosity’s two-step heating experiment of mudstone at Gale crater reveals minerals that formed in the presence of water less than 3 billion years ago.

A lidar image of mysterious features on Earth called a Carolina Bays.
Posted inNews

Four Planetary Landscapes That Scientists Can’t Explain

JoAnna Wendel, freelance science writer and illustrator by JoAnna Wendel 11 December 201711 April 2023

These are just a handful of the hundreds of mysterious features across our solar neighborhood that beg to be studied closer.

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