The first in situ measurement of the pressure at the edge of the solar system reveals that there’s still a lot we don’t know about what sets the size of the heliosphere.
solar system
Posted inNews
Our Seismic Solar System
Earth’s not the only thing that shakes and quakes and goes around the Sun. Not by a long shot.
Posted inAGU News
A New Approach to New Worlds
This month we look around our solar system—and much farther—as we celebrate AGU’s Centennial.
Posted inResearch Spotlights
Sampling the Space Between the Stars
Data from the Cassini and Voyager spacecraft reveal new information about the Sun’s magnetic bubble.
Posted inEditors' Highlights
Solar Properties Rival for Control of Mars’s Bow Shock
While most planetary bow shocks are controlled by the solar wind, at Mars the solar EUV flux is equally important.
Posted inNews
Planetary Low Tide May Force Regular Sunspot Sync Ups
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.
Posted inResearch Spotlights
No Underground Magma Ocean on Jupiter’s Fiery Moon?
A new study suggests alternative explanations for Io’s unusual magnetic field.
Posted inNews
New Tiny Moon of Neptune Discovered
The moon’s size and orbit point to it being the remnant of a collision with Neptune’s moon Proteus.
Posted inNews
New Horizons Spacecraft to Reach Farthest Body in Solar System Yet
The flyby of Ultima Thule on New Year’s Day will give us our first glimpse of a mysterious Kuiper Belt object.
Posted inNews
Ten New Moons Discovered Around Jupiter
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.