TRACERS (NASA)

NASA's twin TRACERS satellites fly through Earth's polar cusps to study magnetic reconnection, a key driver of space weather. Linked to the magnetic shield on Three Shields.

The Five W's of TRACERS

Who

NASA.

Source: NASA, TRACERS

What

Twin satellites studying magnetic reconnection.

Source: NASA, TRACERS

When

Launched July 23, 2025; operating.

Source: NASA, TRACERS

Where

Low Earth orbit, through the polar cusps of Earth's magnetic field.

Source: NASA, TRACERS

Why

To understand and prepare for the impacts of solar activity on Earth.

Source: NASA, TRACERS

Impact Statement

Agency solution · active

NASA's TRACERS (Tandem Reconnection and Cusp Electrodynamics Reconnaissance Satellites) launched on July 23, 2025. The twin satellites fly in low Earth orbit through the polar cusps, funnel-shaped openings in Earth's magnetic field, to study magnetic reconnection: what happens when activity from the Sun meets the magnetosphere that protects us. Understanding it helps scientists prepare for the effects of solar activity on Earth.

Source: NASA, TRACERS

See how the magnetic field shields us on Three Shields.

For Further Information: NASA, TRACERS