coronagraph

Kamikaze Comet Loses its Head

Kamikaze Comet Loses its Head

Headless comet D1 SOHO photographed in evening twilight on Feb. 28. The comet survived its Feb. 19 perihelion passage but soon after crumbled apart to form a cloud of glowing dust. Credit: Michael Jaeger

Like coins, most comet have both heads and tails. Occasionally, during a close passage of the Sun, a comet’s head will be greatly diminished yet still retain a classic cometary outline. Rarely…

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A New Sungrazing Comet May Brighten in the Evening Sky, Here's How to See It

A New Sungrazing Comet May Brighten in the Evening Sky, Here’s How to See It

Photo taken at 20:00 UT (2 pm. CST) Feb. 19 with the SOHO C2 coronagraph, a device that blocks the Sun, allowing a view of the area close by. A faint tail can be seen just below the comet’s bright head. Credit: NASA/ESA

A newly-discovered comet may soon become bright enough to see from a sky near you. Originally dubbed SOHO-2875, it was spotted in photos taken by the Solar and Heliospheric…

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Comet NEAT passed through SOHO’s C3 coronagraph’s field of view on February 18, 2003. It remains one of the brightest comets observed by SOHO. Scientists were very interested in studying how the comet and its tail reacted to the strong coronal mass ejection that blasted out in its direction. The coronagraph blocks out the Sun’s intense light to allow us to see faint objects in the corona.


Courtesy of SOHO consortium. SOHO is a project of international cooperation between ESA and NASA.

Kamikaze Comet Loses its Head

Headless comet D1 SOHO photographed in evening twilight on Feb. 28. The comet survived its Feb. 19 perihelion passage but soon after crumbled apart to form a cloud of glowing dust. Credit: Michael Jaeger

Like coins, most comet have both heads and tails. Occasionally, during a close passage of the Sun, a comet’s head will be greatly diminished yet still retain a classic cometary outline. Rarely are we left with nothing but a tail. How eerie it looks. Like a feather plucked from some cosmic deity floating down from the sky. Welcome to C/2015 D1 SOHO, the comet that almost didn’t make it. (…)
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© Bob King for Universe Today, 2015. | Permalink | One comment |
Post tags: Boonplod, Comet C/2015 D1 SOHO, coronagraph, Cowart, soho

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This sun-grazing comet that appeared in our C2 coronagraph images on April 29th, 2000, was headed right for the Sun where it soon disintegrated the next day. Comets, composed of ice and dust, characteristically have particles streaming out behind them. Comets can be found zooming around space quite frequently.


Courtesy of SOHO consortium. SOHO is a project of international cooperation between ESA and NASA.

CME blast — A large coronal mass ejection ejects a cloud of particles into space on December 2nd, 2003. In this composite, an EIT 304 image of the sun from about the same time has been appropriately scaled and superimposed on a LASCO C2 image where a red occulting disk can be seen extending around the Sun. This LASCO coronagraph instrument allows details in the corona to be observed.


Courtesy of SOHO/LASCO consortium. SOHO is a project of international cooperation between ESA and NASA.

A New Sungrazing Comet May Brighten in the Evening Sky, Here’s How to See It

Photo taken at 20:00 UT (2 pm. CST) Feb. 19 with the SOHO C2 coronagraph, a device that blocks the Sun, allowing a view of the area close by. A faint tail can be seen just below the comet’s bright head. Credit: NASA/ESA

A newly-discovered comet may soon become bright enough to see from a sky near you. Originally dubbed SOHO-2875, it was spotted in photos taken by the Solar and Heliospheric Observatory (SOHO) earlier this week. Astronomer Karl Battams, who maintains the Sungrazer Project website, originally thought this little comet would dissipate after its close brush with the Sun. To his surprise, it outperformed expectations and may survive long enough to see in the evening sky.

(…)
Read the rest of A New Sungrazing Comet May Brighten in the Evening Sky, Here’s How to See It (574 words)


© Bob King for Universe Today, 2015. | Permalink | No comment |
Post tags: comet, Kreutz, soho, SOHO-2875, sungrazer

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