Archive · 30 May 2025
NASA Mission Detects Atmospheric Process on Mars
Imagine Mars had a swimming pool of water, but it disappeared.
Scientists used a special mission called MAVEN to see how.
They found a process called sputtering, like tiny cannonballs from the sun hitting Mars' air and pushing atoms into space.
This process caused Mars' water to vanish because the atmosphere eroded.
This discovery helps explain how Mars changed and if it could have once supported life.
MAVEN detected sputtering on Mars, answering questions about water loss.
Sputtering is when solar wind particles knock atoms from the Martian atmosphere.
Scientists directly observed sputtering, using instruments on MAVEN.
The observed sputtering rate was higher than previously estimated.
The discovery helps understand how Mars lost its atmosphere and water.
- Who
- NASA's MAVEN mission and scientists studying Mars.
- What
- MAVEN detected sputtering, an atmospheric escape process, on Mars.
- When
- The discovery was published this week.
- Where
- Mars' atmosphere.
- Why
- To understand the history of water loss and atmospheric erosion on Mars, potentially revealing why the planet lost its water.
- Mission
- MAVEN (Mars Atmosphere Volatile Evolution)
- Process Observed
- Sputtering
- Description of Sputtering
- Solar wind particles hitting Mars' upper atmosphere, knocking atoms into space.
- Significance
- Confirmed sputtering as a key mechanism in Mars' atmospheric erosion.
- Impact
- Could reshape understanding of Mars' past and its potential for life.
- Rate of sputtering
- Four times higher than previously thought.