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Our Parker Solar Probe was at the right place at the right time to capture a unique view of comet #NEOWISE on July 5. Parker Solar Probe’s position in space gav...e the spacecraft an unmatched view of the comet’s twin tails when it was particularly active just after its closest approach to the Sun, called perihelion. https://go.nasa.gov/3fkqTdm The first image is unprocessed data from Parker Solar Probe’s WISPR instrument, which takes images of the Sun’s outer atmosphere and solar wind in visible light. The twin tails of comet NEOWISE are seen more clearly in the second image. This version of the image has been processed to increase contrast and remove excess brightness from scattered sunlight, revealing more detail in the comet tails. The lower tail, which appears broad and fuzzy, is the dust tail of comet NEOWISE created when dust lifts off the surface of the comet’s nucleus and trails behind the comet in its orbit. Scientists hope to use WISPR’s images to study the size of dust grains within the dust tail, as well as the rate at which the comet sheds dust. The upper tail is the ion tail, which is made up of gases that have been ionized by losing electrons in the Sun’s intense light. These ionized gases are buffeted by the solar wind the Sun’s constant outflow of magnetized material creating the ion tail that extends directly away from the Sun. Parker Solar Probe’s images appear to show a divide in the ion tail. This could mean that comet NEOWISE has two ion tails, in addition to its dust tail, though scientists would need more data and analysis to confirm this possibility.

Have you seen Comet NEOWISE in the sky? Visiting from the most distant parts of our solar system, it made its once-in-our-lifetimes close approach to the Sun... on July 3, 2020 and will cross outside Earth’s orbit on its way back to the outer parts of the solar system by mid-August. Join experts on #NASAScience Live Wednesday, July 15 at 3:00 p.m. EDT to learn more about this comet and how you can spot it before it’s gone. Submit questions now using #askNASA and set a reminder to tune in! See more

https://www.ngenespanol.com//no-te-pierdas-la-luna-de-fre/