Updated

Updated · NASA · Jun 19

NASA Advances $250 Million DAPHNE Mission to Phase B With 2 Satellites for Space Weather Study

Updated

Updated · NASA · Jun 19

NASA Advances $250 Million DAPHNE Mission to Phase B With 2 Satellites for Space Weather Study

Q: What critical blind spot in our space weather defenses will NASA's new twin-satellite DAPHNE mission finally uncover?

DAPHNE is meant to expose a major blind spot in space-weather forecasting: how disturbances rising from Earth’s lower atmosphere shape the thermosphere and ionosphere, where many space-weather effects actually play out. Today’s warning systems are strongest at tracking the Sun itself — flares, coronal mass ejections and incoming particles. What remains poorly understood is how winds, तापerature changes, composition shifts and energy moving up from the lower atmosphere can amplify, alter or confuse those solar-driven effects once they reach near-Earth space. That gap limits forecasts for GPS errors, radio disruptions, satellite drag and risks to astronauts. NASA’s twin DAPHNE satellites are designed to close that gap by making coordinated measurements of the thermosphere’s composition, temperature and winds from two spacecraft at once. Using instruments with heritage from earlier missions, they will observe how Earth’s neutral upper atmosphere transitions into ionized plasma and how that environment responds to both solar forcing and atmospheric inputs from below. The practical payoff is better predictive models. By showing how terrestrial atmospheric processes feed into space weather, DAPHNE should improve forecasts for low Earth orbit satellites, navigation and timing systems, communications, power-grid vulnerability and human spaceflight beyond low Earth orbit. In short, it targets the missing Earth-side piece of the space-weather puzzle.

3 articles · Updated · NASA · Jun 19

NASA moved the DAPHNE mission into Phase B, starting flight and mission-operations planning for a twin-satellite study of how lower-atmosphere changes shape the upper atmosphere and near-Earth space environment.
Two identical spacecraft will gather coordinated measurements of winds, temperature and composition in the thermosphere-ionosphere region, aiming to improve forecasts of space weather effects on GPS, low Earth orbit satellites and astronauts.
A 2027 confirmation review will test the mission’s progress and funding; if approved, DAPHNE’s cost excluding launch would stay below $250 million, with liftoff no earlier than 2029.
Led by Aimee Merkel at the University of Colorado Boulder’s LASP, the mission fits NASA’s broader push to strengthen space-weather readiness as human exploration extends toward the Moon and Mars.

Sources

NASA4h ago

NASA's DAPHNE Mission Enters Phase B to Study Space Weather Impacts on Earth's Atmosphere

SpaceNews4h ago

NASA Selects DAPHNE Mission to Study Space Weather's Interaction with Earth's Atmosphere

News9 LIVE1h ago

NASA Selects DAPHNE Mission to Improve Space Weather Forecasts for GPS, Satellites and Astronauts | Science News - News9live

7 Sources

What critical blind spot in our space weather defenses will NASA's new twin-satellite DAPHNE mission finally uncover?

With astronauts heading to the Moon, how will this mission provide the warnings needed to survive deep-space radiation storms?

DAPHNE Mission 2029: Multi-Satellite Approach to Atmospheric Coupling and Space Weather Readiness

Overview

The DAPHNE mission is designed to bridge Earth's atmospheric layers by focusing on the dynamic interactions between the lower atmosphere and the ionosphere, a process known as atmospheric coupling. Understanding this coupling is crucial because it directly influences space weather, which can disrupt satellite communications, navigation systems, and power grids on Earth. By providing essential data on how changes in one atmospheric layer can affect others, DAPHNE aims to deliver critical insights that will help enhance the resilience of modern technologies that depend on a stable space environment.

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