Factly#247 Voyager 2 becomes the second spacecraft to enter interstellar space [November 9, 2019]

News: According
to the researchers at the University of Iowa in the US, Voyager 2 has entered
the interstellar medium (ISM). This has made Voyager 2 the second human-made
object to journey out of the Sun’s influence. The first spacecraft to do so was
Voyager 1 in 2012.


About Voyager 2: Voyager
2 was launched by NASA in 1977, to study the outer planets. Voyager 2 targeted
Jupiter, Saturn, Uranus and Neptune.

Key achievements:

  • Voyager 2 is the only spacecraft to study all
    four of the solar system’s giant planets at close range.
  • Voyager 2 discovered a 14th moon at Jupiter.
  • Voyager 2 was the first human-made object to fly
    past Uranus.
  • At Uranus, Voyager 2 discovered 10 new moons and
    two new rings.
  • Voyager 2 was the first human-made object to fly
    by Neptune.
  • At Neptune, Voyager 2 discovered five moons,
    four rings, and a “Great Dark Spot.- a huge spinning storm in the southern
    atmosphere of Neptune which was about the size of the entire Earth.


Interstellar medium

  • It is the matter and radiation that exists in
    the space between the star systems in a galaxy. This matter includes gas in ionic,
    atomic, and molecular form, as well as dust and cosmic rays.

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