description Arase (ERG) Overview
Arase, also known as ERG (Exploration of energization and Radiation in Geospace), is a satellite launched by the Japan Aerospace Exploration Agency (JAXA) on December 20, 2016. It studies the dynamics of Earth's radiation belts and the mechanisms behind space storms in geospace. The spacecraft observes energetic particles, plasma waves, and electromagnetic fields in the inner magnetosphere.
help Arase (ERG) FAQ
What is the main mission of JAXA's Arase satellite?
Arase, also known as the Exploration of energization and Radiation in Geospace (ERG), is a Japanese Aerospace Exploration Agency satellite launched in 2016. Its primary mission is to study the dynamics of Earth's radiation belts and uncover the mechanisms behind space storms in geospace.
What kind of orbit does the Arase (ERG) satellite use?
The Arase satellite operates in a highly elliptical Earth orbit, allowing it to travel directly through the dangerous Van Allen radiation belts. This specific orbital path enables the spacecraft's instruments to directly observe the energetic particles trapped in Earth's magnetic field.
When was the Arase satellite launched?
The spacecraft was successfully launched in 2016 by the Japan Aerospace Exploration Agency (JAXA). It was placed into orbit using an Epsilon rocket, which is designed for low-cost, high-performance scientific missions.
What has the Arase satellite discovered about space weather?
By gathering data on geospace, Arase has helped scientists understand how high-energy electrons are accelerated during geomagnetic storms. This data is crucial for protecting satellites and astronauts from sudden surges in radiation caused by solar activity.
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