A rising tone in wave frequencies suggests a complicated, nonlinear series of interactions between electromagnetic sound waves and protons near the magnetic equator.
spacecraft
Posted inNews
Comet Lander Makes a Hard Discovery
The Philae probe, dropped onto a comet by the Rosetta spacecraft, has made contact with a surface thought too hard to be on a comet and has detected a few organic molecules new to comet exploration.
Posted inNews
Philae Scientists Make Plans for Revived Mission
With their robotic explorer awake again, Philae's handlers get ready to give Comet 67P-Churyumov-Gerasimenko renewed scrutiny and to get a better bead on where the lander clings to the spinning orb of rock and ice.
Posted inNews
Mercury's Secrets Revealed by Soon-to-Crash Spacecraft
From finding water ice on Mercury to discovering magnetic field lines cutting through the planet, NASA's MESSENGER spacecraft has spent its lifetime unveiling Mercury's secrets.
Posted inResearch Spotlights
Scientists Watch Solar Winds Blast Mercury's Magnetic Field
A NASA team used the MESSENGER spacecraft to analyze Mercury's magnetosphere during intense solar wind pressure.
Posted inNews
Dawn Spacecraft Enters into Orbit Around Dwarf Planet Ceres
A 16-month investigation of the dwarf planet Ceres could reveal a lot about the most massive body in the asteroid belt and could advance our understanding of the formation of terrestrial planets.
Posted inFeatures
Human and Robotic Missions: To the Moon Again and Beyond
Robotic probes could help us collect samples from the Moon, potentially revealing the origins of our solar system.
Posted inFeatures
How Robotic Probes Helped Humans Explore the Moon—And May Again
Robotic probes—including Ranger VIII, launched 50 years ago this week—paved the way for humankind’s giant leap to the Moon. This history may help guide future plans for lunar exploration.
Posted inAGU News
Andrew Grant Receives 2014 David Perlman Award for Excellence in Science Journalism—News
Andrew Grant, physics reporter for Science News, received the 2014 David Perlman Award for Excellence in Science Journalism—News at the AGU Fall Meeting Honors Ceremony, held on 17 December 2014 in San Francisco, Calif. The Perlman Award is for work published under deadline pressure of 1 week or less.
Posted inAGU News
Learn about the MAVEN Mission to Mars at the 2014 Public Lecture
The 2014 AGU Public Lecture will feature a panel of expert scientists who will speak about the Mars Atmosphere and Volatile Evolution (MAVEN) mission.