NASA fired three rockets into the northern lights and the results are stunning

Recent NASA missions from Alaska are shedding new light on the complex electrical dynamics behind the aurora borealis, commonly known as the northern lights. Two separate launches, utilizing sounding rockets, successfully gathered data in February, offering scientists a unique opportunity to study the forces at play in Earth’s upper atmosphere.

Understanding the Aurora’s Electrical Circuit

The GNEISS Mission

The Geophysical Non-Equilibrium Ionospheric System Science mission, or GNEISS (pronounced “nice”), involved a back-to-back launch of two rockets on February 10th. These rockets reached altitudes of approximately 198.3 and 198.8 miles (319.06 and 319.94 kilometers), deploying multiple subpayloads to collect data. Principal investigator Kristina Lynch of Dartmouth College reported that all systems operated as expected, and the team is pleased with the initial data received.

Mapping Auroral Currents

GNEISS is designed to create a three-dimensional scan of the electrical environment beneath the aurora. The mission utilizes a network of ground receivers and analyzes radio signals transmitted through the plasma, similar to how a CT scan uses X-rays. According to Lynch, the goal is to understand how electrical currents spread downward through the atmosphere, not just where the rockets fly.

Expert Insight: The ability to map these currents is crucial because they directly influence the distribution of energy in Earth’s upper atmosphere. Understanding this process is vital for predicting and mitigating potential disruptions to satellite operations and other space-based technologies.

The Black and Diffuse Auroral Science Surveyor

Launched on February 9th, the Black and Diffuse Auroral Science Surveyor reached an altitude of about 224 miles (360 kilometers). Principal investigator Marilia Samara confirmed that all instruments performed as planned, returning high-quality data. This mission specifically focused on investigating unusual dark regions within the aurora, known as “black auroras,” which may indicate reversals in electrical current direction.

Implications for Space Weather and Satellite Operations

The data collected from these missions is expected to improve understanding of how energy from space impacts Earth’s upper atmosphere. Auroral currents can heat the atmosphere, create winds, and generate turbulence, all of which can affect satellites. Researchers are combining these new findings with data from ground-based instruments and NASA’s upcoming EZIE satellite mission, scheduled for launch in March 2025, to gain a more comprehensive view of the auroral system.

Did You Know? The GNEISS mission released four subpayloads from each rocket, allowing for measurements at multiple points within the auroral region.

The ability to “read the aurora,” as described by Kristina Lynch, could lead to better predictions of space weather events and improved protection for critical infrastructure in space. Further analysis of the data could reveal patterns and relationships that were previously hidden, enhancing our ability to forecast and respond to changes in the Earth’s magnetic environment.

Frequently Asked Questions

What is the purpose of the GNEISS mission?

The GNEISS mission aims to create a three-dimensional picture of the aurora’s electrical environment by mapping how electrical currents spread downward through the atmosphere.

What are “black auroras”?

Black auroras are unusual dark regions within the aurora that may indicate areas where electrical currents suddenly reverse direction.

When is NASA’s EZIE satellite scheduled to launch?

NASA’s EZIE satellite mission is scheduled to launch in March 2025 and will measure auroral electrical currents from orbit.

As scientists continue to analyze the data from these recent missions, what further insights might emerge about the intricate relationship between Earth and the space environment?