NASA's Mars Reconnaissance Orbiter Uncovers New Clues About Red Planet's Subsurface
A recent study published in Geophysical Research Letters has shed new light on a long-running mystery at Mars' south pole, thanks to an innovative radar technique used by NASA's Mars Reconnaissance Orbiter (MRO). The orbiter, which has been orbiting the planet since 2005, employed a special maneuver that rolled the spacecraft 120 degrees to enhance its radar signal, allowing scientists to probe deeper into the Martian subsurface.
The mission aimed to investigate an area suspected of hosting an underground lake, which was first discovered in 2018 by the European Space Agency's Mars Express orbiter. However, recent findings suggest that this feature is more likely to be a layer of rock and dust rather than liquid water. The radar signal, which bounced off the subsurface, revealed a faint reflection - a far cry from the strong signal detected by the ESA's Mars Advanced Radar for Subsurface and Ionospheric Sounding (MARSIS) instrument.
Researchers believe that the unusual strength of the signal could be caused by a unique geological feature, such as an ancient lava flow or smooth terrain. Gareth Morgan and Than Putzig, scientists leading the study, are excited to apply this technique at other interesting regions on Mars, including Medusae Fossae, a sprawling geologic formation near the equator.
The discovery has significant implications for future explorers of the Red Planet, as it suggests that water resources may be abundant in certain areas. "If it's ice, that means there's lots of water resources near the Martian equator," said Putzig, emphasizing the potential importance of this finding for human missions to Mars.
The successful application of the very large roll technique has opened up new possibilities for MRO's SHARAD instrument and has sparked renewed interest in exploring the subsurface of Mars. As scientists continue to unravel the mysteries of the Red Planet, NASA's Mars Reconnaissance Orbiter remains a vital tool in their quest for discovery.
A recent study published in Geophysical Research Letters has shed new light on a long-running mystery at Mars' south pole, thanks to an innovative radar technique used by NASA's Mars Reconnaissance Orbiter (MRO). The orbiter, which has been orbiting the planet since 2005, employed a special maneuver that rolled the spacecraft 120 degrees to enhance its radar signal, allowing scientists to probe deeper into the Martian subsurface.
The mission aimed to investigate an area suspected of hosting an underground lake, which was first discovered in 2018 by the European Space Agency's Mars Express orbiter. However, recent findings suggest that this feature is more likely to be a layer of rock and dust rather than liquid water. The radar signal, which bounced off the subsurface, revealed a faint reflection - a far cry from the strong signal detected by the ESA's Mars Advanced Radar for Subsurface and Ionospheric Sounding (MARSIS) instrument.
Researchers believe that the unusual strength of the signal could be caused by a unique geological feature, such as an ancient lava flow or smooth terrain. Gareth Morgan and Than Putzig, scientists leading the study, are excited to apply this technique at other interesting regions on Mars, including Medusae Fossae, a sprawling geologic formation near the equator.
The discovery has significant implications for future explorers of the Red Planet, as it suggests that water resources may be abundant in certain areas. "If it's ice, that means there's lots of water resources near the Martian equator," said Putzig, emphasizing the potential importance of this finding for human missions to Mars.
The successful application of the very large roll technique has opened up new possibilities for MRO's SHARAD instrument and has sparked renewed interest in exploring the subsurface of Mars. As scientists continue to unravel the mysteries of the Red Planet, NASA's Mars Reconnaissance Orbiter remains a vital tool in their quest for discovery.