What is the sun flare?
solar eruptions are mass ejections from the Sun surface caused by spontaneous reconnection of the magnetic field lines. The sun flares are so violent that they would be able to burn whole continents if the Earth was held close to them. Sun eruptions are a danger to astronauts due to energy particles that release long distances. Sun eruptions tend to occur in active areas around sunlight and their frequency corresponds to the intensity of sun spots at a given moment, between once a week to several a day. Solar flares are strong enough to temporarily disrupt radio communication on Earth. The events of the magnetic re -connection that drive solar eruptions take place on time of minutes for tens of minutes.
Solar flares are related to coronal mass ejects, another type of stellar phenomena, with a large number of solar atmosphere to extend into space with high speeds. In the solar eruptionElectrons, protons and heavy ions can be accelerated to the speed of close light. For an unfortunate astronaut outside the Earth's atmosphere and lack of sufficient shielding, this could mean immediate death. Scientists are therefore very concerned about studying solar eruptions to predict them better.
The first solar eruptions were observed in 1856 as a clear outburst at the edges of the sunspots. Due to the size of the Sun itself, solar eruptions are relatively small, but due to Earth and other planets are large. Energy particles released by solar flares contribute to the creation of beautiful Aurora Borealis and Aurora Australis.
solar eruptions cause the large hookska of particles known as proton storm, which is what can be dangerous to astronauts. A few decades ago it was believed that proton storms could travel approximately 8% of the speed of light, theoryethically give astronauts two hours to get in the case of observed solar eruption. But recently, in 2005, a proton storm was observed, reaching the proximity of the ground only 15 minutes after the initial observation, indicating the speed of approximately the third speed of light. This increases the risk of solar eruption for astronauts and provides a challenge for design engineers designing a long -range spacecraft such as Mars.