File:CometC2020F3-Neowise-20200716.png

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DescriptionCometC2020F3-Neowise-20200716.png	English: Aug. 21, 2020 Hubble Snaps Close-Up of Celebrity Comet NEOWISE https://www.nasa.gov/feature/goddard/2020/hubble-snaps-close-up-of-celebrity-comet-neowise This image of comet C/2020 F3 (NEOWISE) was taken by the Hubble Space Telescope on Aug. 8, 2020. Hubble’s image represents the first time a comet of this brightness has been photographed at such resolution after this close of a pass by the Sun. The two structures appearing on the left and right sides of the comet’s center are jets made up of ice sublimating from beneath the surface of the nucleus, with the resulting dust and gas being squeezed through at a high velocity. The jets emerge as cone-like structures, then are fanned out by the rotation of comet NEOWISE’s nucleus.
Date	16 July 2020
Source	https://www.nasa.gov/sites/default/files/thumbnails/image/stsci-h-p2045c-f-512x512.png
Author	NASA, ESA, A. Pagan (STScI), and Q. Zhang (Caltech)

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	This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
	Warnings: Use of NASA logos, insignia and emblems is restricted per U.S. law 14 CFR 1221. The NASA website hosts a large number of images from the Soviet/Russian space agency, and other non-American space agencies. These are not necessarily in the public domain. Materials based on Hubble Space Telescope data may be copyrighted if they are not explicitly produced by the STScI.[1] See also {{PD-Hubble}} and {{Cc-Hubble}}. The SOHO (ESA & NASA) joint project implies that all materials created by its probe are copyrighted and require permission for commercial non-educational use. [2] Images featured on the Astronomy Picture of the Day (APOD) web site may be copyrighted. [3] The National Space Science Data Center (NSSDC) site has been known to host copyrighted content. Its photo gallery FAQ states that all of the images in the photo gallery are in the public domain "Unless otherwise noted."

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	20:30, 21 August 2020		512 × 512 (1.19 MB)	Drbogdan	Uploaded a work by NASA, ESA, A. Pagan (STScI), and Q. Zhang (Caltech) from https://www.nasa.gov/sites/default/files/thumbnails/image/stsci-h-p2045c-f-512x512.png with UploadWizard

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Comet NEOWISE

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- C/2020 F3
Usage on zh.wikipedia.org
- C/2020 F3

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Label	Green
Source	STScI
Credit/Provider	NASA, ESA, STScI, Q. Zhang and Z. Levay
Headline	Whether it’s a surprise asteroid, colorful aurora or a heart-stopping eclipse, the landscape of the night sky is constantly changing. When a new visitor appears in view, it’s guaranteed to grab the attention of professional astronomers and casual sky gazers alike. Well, consider the Hubble Space Telescope the paparazzi of the sky, as it’s managed to snap the closest images yet of the sky’s latest visitor to make headlines, comet C/2020 F3 (NEOWISE), after it passed by the Sun. Comet NEOWISE is considered the brightest visible from the Northern Hemisphere since 1997’s Hale-Bopp. It’s estimated to be traveling at a whopping 40 miles per second, or 144,000 miles per hour. The comet’s closest approach to the Sun took place on July 3 and it’s now heading back to the outer parts of the solar system, not to pass through again for another 7,000 years or so.
Author	Space Telescope Science Institute Office of Public Outreach
Short title	Comet NEOWISE
Copyright holder	Copyright© 2020 by Zoltan G. Levay
Image title	The Hubble images of comet NEOWISE, taken on August 8, zero in on the visitor’s coma, the gossamer shell that surrounds its nucleus, and its dusty output. This is the first time a comet of this brightness has been photographed at such resolution after this close of a pass by the Sun – past attempts proved unsuccessful after those comets disintegrated in the searing heat.“Hubble has far better resolution than we can get with any other telescope of this comet,” said lead researcher Qicheng Zhang of the California Institute of Technology in Pasadena, California. “That resolution is very key in getting an image very close to the nucleus. It lets us see changes inthe dust right after it’s stripped from that nucleus due to solar heat, sampling dust as close to the original properties of the comet as possible.”The heart of the comet, its icy nucleus, is too small to be seen by Hubble. The ball of ice may be no more than 3 miles (4.8 kilometers) across. Instead, the Hubble image captures a portion of the vast cloud of gas and dust enveloping the nucleus, which measures about 6,800 miles (11,000 kilometers) across in this photo.The Hubble photos may help reveal the color of the comet’s dust and how those colors change as the comet moves away from the sun. This, in turn, may explain how solar heat affects the contents and structure of that dust and the comet’s coma. The ultimate goal here would be to learn the original properties of the dust.Researchers are currently delving more into the data to see what they’re able to confirm.NASA’s Near-Earth Object Wide-field Infrared Survey Explorer (NEOWISE) mission first discovered its namesake comet in March 2020. As the comet made its way closer to the Sun, searing heat melted its ices, unleashing dust and gas that leaves the signature tails. Throughout the summer, ground-based skywatchers in the Northern Hemisphere were able to catch a view of the traveler moving across the sky.
Usage terms	http://hubblesite.org/copyright/
Date and time of data generation	17 August 2020
Width	512 px
Height	512 px
Pixel composition	RGB
Number of components	3
Horizontal resolution	72 dpi
Vertical resolution	72 dpi
Exif version	2.31
Color space	Uncalibrated
Image width	512 px
Image height	512 px
Bits per component	16 16 16
Software used	The ESA/ESO/NASA FITS Liberator
Date and time of digitizing	18:37, 16 July 2020
File change date and time	16:52, 17 August 2020
Date metadata was last modified	17:43, 17 August 2020
Unique ID of original document	xmp.did:ed378c29-90b4-4947-8518-514f0ffe318c
Copyright status	Copyrighted
Keywords	Comet C/2020 F3 NEOWISE
Contact information	outreach@stsci.edu http://hubblesite.org 3700 San Martin Drive Baltimore, MD, 21218 USA 410-338-4444

File:CometC2020F3-Neowise-20200716.png

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