Search results
Results from the WOW.Com Content Network
be re-implanted into the regolith as a result of the Moon's gravity; escape the Moon entirely if the particle is moving at or above the lunar escape velocity of 2.38 km/s (1.48 mi/s), or 5,328 mph (8,575 km/h); be lost to space either by solar radiation pressure or, if the gases are ionized, by being swept away in the solar wind's magnetic field.
Solar radiation maps are built using databases derived from satellite imagery, as for example using visible images from Meteosat Prime satellite. A method is applied to the images to determine solar radiation. One well validated satellite-to-irradiance model is the SUNY model. [40] The accuracy of this model is well evaluated.
Ionizing radiation from cosmic rays, the Sun and the resulting neutron radiation [103] produce radiation levels on average of 1.369 millisieverts per day during lunar daytime, [14] which is about 2.6 times more than on the International Space Station with 0.53 millisieverts per day at about 400 km above Earth in orbit, 5–10 times more than ...
Once in the vicinity of the Moon, the lander spent approximately one more Earth-day orbiting the Moon. This set February 22, 2024 at 11:24 PM UTC as the lander's lunar landing date. [ 23 ] [ 24 ] The initial aim was to land within the Malapert-A crater, which is about 300 km (190 mi) from the lunar south pole.
With the moon blocking much of the Sun's visible radiation, Hess still measured rising radiation at rising altitudes. [3] He concluded that "The results of the observations seem most likely to be explained by the assumption that radiation of very high penetrating power enters from above into our atmosphere."
Post-eruptive loops in the wake of a solar flare, image taken by the TRACE satellite (photo by NASA). In solar physics, a solar particle event (SPE), also known as a solar energetic particle event or solar radiation storm, [a] [1] is a solar phenomenon which occurs when particles emitted by the Sun, mostly protons, become accelerated either in the Sun's atmosphere during a solar flare or in ...
It is the moon with the highest volcanic activity in the Solar System, as a result of the tidal forces from the planet and its oval orbit around it. Even so, the surface is still cold: -143 Cº. The atmosphere is 200 times lighter than Earth's atmosphere, the proximity of Jupiter gives a lot of radiation, and it is completely devoid of water.
Several processes can explain the presence of trace gases on the Moon: high energy photons or solar winds reacting with materials on the lunar surface, evaporation of lunar regolith, material deposits from comets and meteoroids, and out-gassing from inside the Moon. However, these are trace gases in very low concentration. [16]