NASA Voyager 2 crosses the Solar System, entering nearest interstellar space

NASA’s Voyager 2 Spacecraft is Getting Close to Interstellar Space

Credit NASA JPL-Caltech

Scientists have been observing Voyager 2, which has been traveling in the outermost layer of the heliosphere or the bubble around the solar system formed by solar wind, since 2007.

According to NASA, the spacecraft has started to detect the same increase in cosmic radiation that hit Voyager 1 just before it finally entered interstellar space. The probe's Low-Energy Charged Particle instrument has detected a similar increase in higher-energy cosmic rays.

Spacecraft the Voyager series was created by jet propulsion Laboratory in Pasadena, California. Voyager 1 crossed the heliopause, or the edge of the heliosphere, in 2012. The researchers carefully monitoring the data that passes the "Voyager-2" in order to fix the time at which it reaches heliopause - the boundaries of the heliosphere, where solar wind speed drops to nearly zero.

"We're going to learn a lot in the coming months, but we still don't know when we'll reach the heliopause". So, up until "Voyager 2" crosses heliopause, it will be impossible to say with certainty where it is in relation to her he is.

Lasting longer than ever expected, Voyager 2 continued through the solar system to Uranus and Neptune.

Cosmic rays originate outside the solar system. Launched in 1977, Voyager 2 is a little less than 11 billion miles (about 17.7 billion kilometers) from Earth, or more than 118 times the distance from Earth to the Sun.

An interstellar analysis is a space detection that has left or is likely to adieu the Solar System and infiltrates interstellar space, which is commonly well-defined as the region ayond the heliopause. However, Voyager team members note that the increase in cosmic rays is not a definitive sign that the probe is about to cross the heliopause. Over the course of the 11 year cycle of the sun, the solar wind flows and ebbs making the bubble around our solar system contract and expand. At the moment scientists cannot say when "Voyager-2" will reach the heliopause.

However, one thing is sure, namely, that Voyager 2 is approaching interstellar space and it would become the second human-made spacecraft to achieve that feat after its twin, Voyager 1. The information they have returned to Earth has revolutionized the science of planetary astronomy, helping to resolve key questions while raising intriguing new ones about the origin and evolution of the planets in the solar system.

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