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NASA’s Parker Solar Probe made the closest flyby of the sun ever made by a spacecraft in Dec. 25. See the views it captured of the sun's atmosphere during the flyby.

Credit: NASA's Goddard Space Flight Center/Joy Ng

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Transcript
00:00Lift off of the mighty Delta IV heavy rocket with NASA's Parker Solar Probe.
00:06Ever since NASA's Parker Solar Probe launched into space in 2018,
00:11it has been circling closer and closer to the sun and taking images along the way.
00:17In December 2024, it made its record-breaking closest approach to the sun.
00:23That's when it took these historic close-ups of the solar atmosphere,
00:27images that are changing the way we understand our star.
00:31With images like these ones, we are actually going to have this poor understanding
00:37of how the solar atmosphere works, and in particular,
00:40to try to predict the solar activity and mitigate its impacts.
00:45The images were taken by the spacecraft's Wide Field Imager for Solar Probe, or WISPR,
00:51which observes space in visible light.
00:54WISPR doesn't look at the sun directly. Instead, it captures solar material just as it comes off of the sun.
01:01When it took these images, the spacecraft was only 3.8 million miles from the sun's surface.
01:07If Earth and the sun were one foot apart, Parker Solar Probe was about half an inch from the sun.
01:13At that distance, the spacecraft was immersed in the solar atmosphere known as the corona.
01:19Here, streams of electrically charged particles float outward from the sun at over a million miles per hour,
01:26forming the solar wind that fills the entire solar system.
01:30These images reveal previously unseen details at the origin of the solar wind.
01:35The amount of clarity and the amount of details that we got from Parker Solar Probe is totally unprecedented.
01:41But also, we see phenomena that you didn't really see before.
01:44And that's where the fun begins.
01:46If you look closely, you can see key features in the images.
01:49This is a collision of three large outbursts of solar material known as coronal mass ejections, or CMEs.
01:58The most impactful events, multiple events that are one following the others,
02:04and understanding that interaction between CMEs will help us also have another view of their potency for space weather.
02:12When the most impactful eruptions reach Earth, they can trigger auroras.
02:17But they can also harm satellites, disrupt power grids, and expose astronauts to dangerous radiation.
02:23On the far left, there's another key feature.
02:26This region marks an important structure known as the heliospheric current sheet.
02:32If we zoom out and look at the sun from the side,
02:35the current sheet looks like a twirling skirt that extends out from the sun and across the solar system.
02:41This invisible current sheet is a boundary separating where the solar wind's magnetic field changes direction from north to south.
02:49It surrounds the whole sun, and it never disappears.
02:54That's actually one of the regimes of the solar wind that we have to understand.
02:58The current sheet is important to study because it can affect how impactful eruptions can be at Earth.
03:04We've never seen these phenomena in such detail before.
03:08And scientists are continuing to study these images to piece together how the sun affects Earth and the rest of the solar system.
03:16Parka Solar Probe is opening our eyes on a new reality about our star to sun.
03:22It is rewriting the textbooks for us.
03:24Parka Solar Probe is placing a golden bulb to aiking.
03:30For the sunset lights.
03:32Parka Solar Probe is ongoing in the corner
03:34Of the yoga phone.
03:35Parka Lee Black so slowly is opening our eyes at the messenger of the solar system.
03:38You are putting all the enclins on the dynamicobyptrutions to put onto the mother防止역isti tape.

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