The puzzle of methane on Mars has taken an interesting new twist: for the first time, the gas has been detected within Martian meteorites. The finding adds another layer to the ongoing controversy over the origin of the methane, whether it is abiotic and geological or a potential biosignature of life, either past or present.
The debate over whether Mars used to be warmer and wetter or colder and wetter earlier in its history has been a long and contentious one. Now, a new study suggests it may be the latter, that Mars was indeed wetter, as overwhelming evidence has already shown, but that it was still a rather cold and icy climate overall.
The next NASA mission to Mars, the InSight lander, will include some additional experimental technology: the first deep-space CubeSats. Two small CubeSats will fly past the planet as the lander is descending through the atmosphere; this will be the first time CubeSats have been used in an interplanetary mission.
For the first time, impact glass has been detected on the surface of Mars; the discovery not only provides new information about the formation of impact craters, but might even offer clues to the possibility of ancient life on the Red Planet. The discovery was made by the Mars Reconnaissance Orbiter (MRO) spacecraft.
While Curiosity and Opportunity are still busy roving Mars, NASA has begun testing its next lander, InSight, scheduled to launch in March 2016. It will be the first mission devoted to studying the interior of the Red Planet, providing a unique and necessary addition to the Mars exploration program overall.