From inflatable and 3D-printed structures to entire habitats, architecture plays an unprecedented role in space exploration missions. As NASA plans for long-term human exploration of the Moon and Mars under Artemis and CHAPEA missions, new technologies are required to meet the unique challenges of ...
From inflatable and 3D-printed structures to entire habitats, architecture plays an unprecedented role in space exploration missions. As NASA plans for long-term human exploration of the Moon and Mars under Artemis and CHAPEA missions, new technologies are required to meet the unique challenges of ...
implying that not all the Hf had decayed before the core formed. This and other isotopic evidence indicates that the core formed within 20Myr of the formation of the elements that comprise the solar system. Isotopic evidence indicates that some crust formed very early but that new crust continue...
There’s a reason Jezero Crater was chosen as the landing site for the Perseverance Rover: it is considered one of the likeliest places to find any evidence if Mars was ever habitable for long periods of time. In this great new flyby video from ESA, you can get a birds-eye look at ...
Here we provide evidence that large martian ripples form from the same hydrodynamic instability as windblown dunes and subaqueous ripples. Using an artificial neural network, we characterize the morphometrics of over a million isolated barchan dunes on Mars and analyze how their size and shape vary ...
However, a main goal in Mars exploration is still unsolved: the possibility of past life on Mars has been suggested from the evidence of liquid water 3.5 Gy ago, a period during which life emerged on Earth. As on Earth, ancient sediments may have recorded any possible biological activity in...
Although Mars has no evidence of a current structured global magnetic field, observations show that parts of the planet's crust have been magnetized, and that alternating polarity reversals of its dipole field have occurred in the past. This paleomagnetism of magnetically susceptible minerals has prop...
Soviet leaderNikita Khrushchevin 1957 used the fact that his country had been first to launch asatelliteas evidence of the technological power of the Soviet Union and of the superiority ofcommunism. He repeated these claims afterYuri Gagarin’s orbital flight in 1961. Although U.S. Pres.Dwight...
First Evidence of Persistent Nighttime Temperature Structures in the Neutral Thermosphere of Marsdoi:10.1029/2018GL078761ATMOSPHERIC sciencesMARS (Planet)THERMOSPHERESOLAR systemSOLAR activityLAND surface temperatureUsing two Mars years of data collected by the Neutral Gas and Ion Mass Spectrom...
The evidence for both PT and AT supports the absolute mechanical and material properties of female individuals’ tendons being significantly lower than men’s. However, work by O’Brien et al. [24] suggests that when PT length is normalised to fascicle length of any of the four quadriceps ...