Magnetized particles in a meteorite suggest strong magnetic fields in the early solar nebula.
solar system
Juno Detects Jupiter’s Highest-Energy Ions
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.
Fingerprints of Jupiter Formation
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.
Martian Meteorites Shed Light on Solar System’s Early Dynamics
Chemical compositions of rocks from Mars indicate that the earliest orbits of Jupiter and Saturn were more circular than they are today.
Wind: Discoveries and Impacts of a Venerable Spacecraft
Wind has been one of the most robust, diverse, long-lasting, and impactful heliophysics missions ever to have been carried out.
Dawn Storms at Jupiter
Juno spacecraft observations provide the first global description of dawn storms in Jupiter’s aurorae, from their initiation to their end.
Radio on Jupiter, Brought to You by Ganymede
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.
A Field Guide to the Magnetic Solar System
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.
Measuring Massive Magnetic Meteorites
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.
Traces of Impacts on Warm Planetesimals Early in Solar System
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.