Related Experiment Video
Updated: Jun 6, 2026
06:48
Surface Mapping of Earth-like Exoplanets using Single Point Light Curves
Published on: May 10, 2020
Mars exploration program analysis group goal one: determine if life ever arose on Mars
Tori M Hoehler1, Frances Westall
1Exobiology Branch, NASA Ames Research Center, CA 94035, USA . tori.m.hoehler@nasa.gov
Astrobiology
|December 2, 2010
Summary
The Mars Exploration Program Analysis Group (MEPAG) revised its astrobiology goal to determine if life ever arose on Mars. This update reflects the latest scientific priorities for Mars exploration and astrobiology research.
Area of Science:
- Planetary Science
- Astrobiology
- Mars Exploration
Background:
- The Mars Exploration Program Analysis Group (MEPAG) establishes scientific goals for Mars exploration.
- MEPAG's goals document is periodically updated to reflect current scientific priorities.
- Goal One focuses on determining if life ever arose on Mars.
Purpose of the Study:
- To present the finalized revision of MEPAG's astrobiology-related Goal One.
- To outline the updated objectives and priorities for searching for evidence of past Martian life.
Main Methods:
- Review and revision of the existing MEPAG Goals Document.
- Community input and scientific consensus on astrobiological priorities.
- Formalization of the revised Goal One text.
Main Results:
- A revised version of Goal One, "Determine if life ever arose on Mars," has been finalized.
- The updated goal incorporates current scientific understanding and future research directions.
- The revised goal is available in the September 24, 2010, version of the MEPAG Goals Document.
Conclusions:
- The revision ensures that Mars exploration efforts remain aligned with the forefront of astrobiological inquiry.
- The updated goal provides a clear framework for future missions seeking to answer fundamental questions about life on Mars.
Related Concept Videos
02:06Conditions on Early Earth
Around 4 billion years ago, oceans began to condense on earth while volcanic eruptions released nitrogen, carbon dioxide, methane, ammonia, and hydrogen into the primordial atmosphere. However, organisms with the characteristics of life were not initially present on earth. Scientists have used experimentation to determine how organisms evolved that could grow, reproduce, and maintain an internal environment.
02:06Conditions on Early Earth
Around 4 billion years ago, oceans began to condense on earth while volcanic eruptions released nitrogen, carbon dioxide, methane, ammonia, and hydrogen into the primordial atmosphere. However, organisms with the characteristics of life were not initially present on earth. Scientists have used experimentation to determine how organisms evolved that could grow, reproduce, and maintain an internal environment.
01:26Impact: Problem Solving
In an experiment conducted during a Mars mission, a rover propels a projectile with an initial velocity, and the projectile rebounds after colliding with the Martian surface. To ascertain the maximum height attained by the projectile after this collision, the known restitution coefficient and acceleration due to gravity are employed.
By designating the launch point as the origin and utilizing kinematic equations, the vertical component of the projectile's velocity at the point of impact is...
By designating the launch point as the origin and utilizing kinematic equations, the vertical component of the projectile's velocity at the point of impact is...
01:24Origin of Cellular Life
The origin of life on Earth is a complex and enigmatic event rooted in ancient biochemical processes and geological conditions. Experimental evidence supports the hypothesis that life began with the spontaneous formation of organic molecules such as RNA nucleotides, amino acids, and lipids under early Earth conditions. Factors like volcanic activity, intense UV radiation, and a reducing atmosphere without free oxygen likely facilitated these reactions. Hydrothermal vents on the ocean floor are...
01:36Conversion of Units
Sometimes, there is a need to convert from one unit to another one. For instance, reading a cookbook in which quantities are expressed in units of liters or ounces may require conversion of quantities to cups. Or, when looking up directions on how to get to a location, we may be interested to know how many miles we are going to walk. In this case, we would have to convert units of feet or meters to miles.
The first step in the unit conversion is to list the given units and the units required...
The first step in the unit conversion is to list the given units and the units required...
01:15Torque Free Motion
The torque-free motion refers to the movement of a rigid body in space when no external torques are acting upon it. This type of motion can be observed in environments where there are no external forces or frictions, like in outer space. For example, a rotation of Mars in space is a torque-free motion. Mars is an axisymmetric object, meaning it has an axis of symmetry along which it rotates, designated as the z-axis. The rotating frame of reference is defined such that the center of mass of...