In anticipation of its future manned missions to the Moon and Mars, Nasa wishes to acquire tools for predicting the most precise solar activity possible. In addition to the satellites already dedicated to this task, NASA has just selected the SunRISE mission. Composed of six cubesats which will form by interferometry a radiotelescope several kilometers wide, this mission will provide real-time data, useful for the development of solar radiation maps in particular.
Interferometers make it possible to create electromagnetic wave interference, as do … “data-image =” https://cdn.futura-sciences.com/buildsv6/images/midioriginal/5/5/9/5596bb0666_86061_ligo- hanford-observatory-caltech-mit-ligo-lab.jpg “data-url =” https://news.google.com/sciences/definitions/physique-interferometre-323/ “data-more =” Read more “> , a big to better understand how they occur There are no specific characteristics for … “data-image =” https://cdn.futura-sciences.com/buildsv6/images/midioriginal/b/9/7/b97fffc285_117970_tempete- littoral.jpg “data-url =” https://news.google.com/planete/definitions/climatologie-tempete-14551/ “data-more =” Read more “> of giant solar particles. This mission also aims to improve the prediction of this solar activity which generates and releases in the radiation. These represent a danger for aboard the and will also threaten (or inhabitants) of the Moon with a tiny “L” is the satellite of a planet. For example Phobos and Deimos are the two moons of the planet Mars.
The moon with a capital “L” is the only natural satellite of the Earth; it probably results from a collision 4.4 years ago … “data-image =” https://cdn.futura-sciences.com/buildsv6/images/midioriginal/c/7/8/c785911d64_50034415_lune-05 .jpg “data-url =” https://news.google.com/sciences/definitions/univers-lune-2550/ “data-more =” Read more “> and Mars. These satellites will be launched in 2023 in order to be operational before the first manned missions to the Moon on of NASA, which plans to send a man and a woman to the Moon in 2024.
These satellites will fly in formation in the orbit in astronomy
In astronomy, the orbit indicates the closed trajectory followed by a celestial body around another celestial body in a periodic manner, under the influence of … “data-image =” https: //cdn.futura-sciences .com / buildsv6 / images / midioriginal / 9/2 / e / 92eefd02ac_49145_iss-terre-soleil-nasa-s-marshall-space-flight-center-flickr-cc-nc-20.jpg “data-url =” https: //news.google.com/sciences/definitions/univers-orbite-873/ “data-more =” Read more “> low. Spaced only about ten kilometers from each other, they will form, by The principle consists in the study of the interferences produced by the combination of coherent beams (coming from the same source and vibrating in phase) presenting a path difference. It provides better spatial resolution. “Data-url =” https://news.google.com/sciences/definitions/physique-interferometrie-2513/ “data-more =” Read the definition “> , a large radio telescope several kilometers in diameter. Together, they will continuously observe the Sun is the closest star to Earth, from which it is about 150 million kilometers apart. The Sun is located 8.5 kparsecs from the center of the Milky Way. In the classification of stars, the sun is a star of type G2.
The mass … “data-image =” https://cdn.futura-sciences.com/buildsv6/images/midioriginal/1/d/9/1d9cd1d45f_50034577_eruption.jpg “data-url =” https: // news. google.com/sciences/definitions/univers-soleil-3727/ “data-more =” Read more “> in the air bass This is generally a time frequency f, related to the period T (expressed in s) of the phenomenon observed by the following formula: f = 1 / T.
It is also possible to … “data-url =” https://news.google.com/sciences/definitions/physique-frequence-3940/ “data-more =” Read more “> to create three-dimensional maps of the Sun to identify the regions where these storms form.
SunRISE also aims to map, for the first time, the lines of Magnetic field, magnet and field … “data-image =” https://cdn.futura-sciences.com/buildsv6/images/midioriginal/6 /a/a/6aa47f5f22_85914_champ-magnetique.jpg “data-url =” https://news.google.com/sciences/definitions/physique-champ-magnetique-3878/ “data-more =” Read more “>starting from the Sun and moving in all directions of interplanetary space. This aspect of the mission is particularly interesting. Indeed, this interplanetary magnetic field has a determining role because it is it which magnetically connects the Sun to the planets. When accelerated particles escape from the Sun, they will follow and pass through these magnetic field lines. By observing the region of the Sun where these storms must take place, and using these future magnetic field line maps, it will be possible to better predict where these particles will go and whether, for example, they will reach the Structure from the globe … “data-image =” https://cdn.futura-sciences.com/buildsv6/images/midioriginal/8/4/f/84ff7edce5_123534_terre-apollo8.jpg “data-url =” https: // news.google.com/planete/definitions/structure-terre-terre-4725/ “data-more =” Read more “> or Mars for example.
Better understand how the Sun influences the space environment
This real-time data will be useful toNasa which produce short and very short term forecast bulletins of solar activity so as to broadcast warnings and alerts when solar activity is likely to pose a risk. The use of these bulletins should enable those in charge of manned missions to reduce, as much as possible, the degrees of exposure of astronauts in activity on the Moon, on board of space infrastructures or on a voyage bound for Mars, for example .
If astronauts aboard the International Space Station (ISS), the only orbital station in service, represents a major step for the … “data-image =” https://cdn.futura-sciences.com/buildsv6/ images / midioriginal / d / 3/4 / d34dc1c390_50084100_iss-01.jpg “data-url =” https://news.google.com/sciences/definitions/astronautique-station-spatiale-internationale-2571/ “data-more = “Read more”> and energetic particles from the Sun, associated with and to ejections from the Unit of mass: the kilogram
The mass is represented by the symbol m and, in … “data-image =” https://cdn.futura-sciences.com/buildsv6/images/midioriginal/8/4/b/84b0382c5e_80528_masse.jpg “data- url = “https://news.google.com/sciences/definitions/physique-masse-15213/” data-more = “Read more”> coronal.
During the , astronauts were very little exposed to these risks. On the one hand, because the missions were planned at a time when the activity of the Sun was weak and on the other hand, the missions not exceeding two weeks, the exposure was short enough not to expose them to radiation doses with significant health consequences. As proof, none died prematurely and most of them died very old.