description Arase Overview
Arase, formerly known as the Exploration of Energization and Radiation in Geospace (ERG), is a Japanese scientific satellite operated by JAXA. Launched in 2016, it was designed to study the Earth's inner magnetosphere, including the Van Allen radiation belts and the processes that accelerate high-energy particles. Its instruments measure charged particles, plasma waves, and electric and magnetic fields. The mission is intended for research on wave-particle interactions and space-weather physics.
help Arase FAQ
How good is Arase?
Arase scores 6.71/10 (Fair) on Lunoo, making it rated in the Space Mission category.
What are the best alternatives to Arase?
See our alternatives page for Arase for a ranked list with scores. Top alternatives include: Arase (ERG), Van Allen Probes, EarthCARE.
How does Arase compare to Arase (ERG)?
See our detailed comparison of Arase vs Arase (ERG) with scores, features, and an AI-powered verdict.
Is Arase worth it in 2026?
With a score of 6.71/10, Arase is a solid option in Space Mission. See all Space Mission ranked.
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