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solar system

Magnetic field strengths as a function of distance from the Sun for several meteorite samples
Posted inEditors' Highlights

Magnetic Record of Early Nebular Dynamics

by F. Nimmo 17 August 20218 March 2022

Magnetized particles in a meteorite suggest strong magnetic fields in the early solar nebula.

A new population of highly energetic ions has been discovered at midlatitudes within the inner edge of Jupiter’s relativistic electron belt.
Posted inResearch Spotlights

Juno Detects Jupiter’s Highest-Energy Ions

by Morgan Rehnberg 17 June 202127 January 2022

Trapped ions discovered at midlatitudes can have energies exceeding 100 megaelectron volts per nucleon. Their detection adds to our understanding of the powerful radiation environment around Jupiter.

Chart plotting the evidence presented in the commentary by Weiss and Bottke.
Posted inEditors' Highlights

Fingerprints of Jupiter Formation

by Bethany Ehlmann 16 June 202127 January 2022

Meteorite isotopes, meteorite paleomagnetics, and planet formation models collectively show Jupiter formation via first slow then fast collection of material by core accretion in <5 million years.

Slice of a meteorite determined to have originated on Mars on the basis of its minerology and gases trapped in the rock.
Posted inNews

Martian Meteorites Shed Light on Solar System’s Early Dynamics

by Mara Johnson-Groh 24 May 20214 October 2021

Chemical compositions of rocks from Mars indicate that the earliest orbits of Jupiter and Saturn were more circular than they are today.

Illustration of the Wind spacecraft in front of the magnetosphere that surrounds Earth.
Posted inEditors' Vox

Wind: Discoveries and Impacts of a Venerable Spacecraft

by L.B. Wilson III 18 May 202127 January 2022

Wind has been one of the most robust, diverse, long-lasting, and impactful heliophysics missions ever to have been carried out.

Polar projections of the UV aurora showing four phases of a Jovian dawn storm
Posted inEditors' Highlights

Dawn Storms at Jupiter

by M. Hudson 16 March 202127 January 2022

Juno spacecraft observations provide the first global description of dawn storms in Jupiter’s aurorae, from their initiation to their end.

Plot showing measured magnetic field on Juno as a function of frequency and time on 29 May 2019
Posted inEditors' Highlights

Radio on Jupiter, Brought to You by Ganymede

by A. Yau 25 January 202127 January 2022

Another first from NASA’s Juno spacecraft: the detection of Jupiter radio emissions influenced by the moon Ganymede, over a range of about 250 kilometers in the polar region of Jupiter.

An illustration of an astronaut in space holding a compass.
Posted inFeatures

A Field Guide to the Magnetic Solar System

by Bas den Hond 21 December 20203 November 2021

Not all planets move the needle. But whatever planet you take a magnetic compass to, it’s sure to point out clues to secrets underfoot.

Researchers conduct magnetic measurements of a meteorite at the Smithsonian Museum Support Center.
Posted inNews

Measuring Massive Magnetic Meteorites

by Andrew J. Wight 4 November 202015 February 2022

A new tool to measure the magnetic signatures of big meteorites could not only aid NASA’s mission to Psyche; it could also help solve mysteries about how magnetic fields formed in our early solar system.

Close up of granular structure of meteorite rock
Posted inEditors' Highlights

Traces of Impacts on Warm Planetesimals Early in Solar System

by Laurent G. J. Montési and J. Filiberto 9 October 20208 March 2022

Meteorite NWA 11004 contains evidence of melting preceding an impact dated to 4546±36 Ma. Short lived radioactive decay had already heated the parent body of this meteorite before the impact.

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