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Comet's Death by Sun Photographed for First Time

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The Solar Dynamics Observatory AIA imager (observing in extreme ultraviolet light) actually spotted a sun-grazing comet as it disintegrated over about a 15 minute period (July 6, 2011), something never observed before. The angle of the comet's orbit brought it across the front half of the Sun. Given the intense heat and radiation, the comet simply evaporated away completely. The comet was probably a member of the Kreutz sun-grazer family. (Image credit: NASA/SDO/AIA)

The death of a comet that plunged into the sun was captured on camera this month for the first time in history, scientists say.

The comet met its fiery demise on July 6 when it zoomed in from behind the sun and melted into oblivion as it crashed into the star. It was NASA's Solar Dynamics Observatory (SDO), a satellite orbiting Earth that studies the sun, which witnessed the comet's death-blow.

One of the SDO spacecraft's high-definition imagers "actually spotted a sun-grazing comet as it disintegrated over about a 15 minute period (July 6, 2011), something never observed before," SDO officials said. [See the observatory's image of the comet death]

As SOHO observed with its two coronagraphs for about a day (July 5-6, 2011), an icy comet flew in from behind the Sun and met its end. (Image credit: SOHO (ESA & NASA))

Comets have been spotted near the sun before, but last week's object was the first to be observed in real-time as it disappeared.

"Given the intense heat and radiation, the comet simply evaporated away completely," SDO officials said.

The comet was a type known to astronomers as a sun-grazing comet because its path brought it extremely close to the sun.

The Solar and Heliospheric Observatory, a joint NASA-European Space Agency spacecraft, also spotted the comet's demise and recorded a video of the event.

"This is one of the brightest sun-grazers SOHO has recorded, similar to the Christmas comet of 1996," SOHO project scientist Bernhard Fleck said in a statement.

 

SOHO officials said that, because of the angle of the comet's orbit, it passed across the front half of the sun and appeared to brighten as it struck hotter particles above the solar surface.

A comet's death was observed for the first time by the SOHO spacecraft in July 2011. (Image credit: SOHO (ESA & NASA))

Sun-grazing comets are relatively common and are also known as Kreutz comets, after the 19th century astronomer Heinrich Kreutz who first showed they were related.

Astronomers suspect that Kreutz comets all began as a single, giant comet that broke apart several centuries ago. 

This story was provided by SPACE.com, sister site to LiveScience. You can follow SPACE.com Managing Editor Tariq Malik on Twitter @tariqjmalik. Follow SPACE.com for the latest in space science and exploration news on Twitter @Spacedotcom and on Facebook.

Tariq Malik
Tariq Malik
Space.com Editor-in-chief

Tariq is the editor-in-chief of Live Science's sister site Space.com. He joined the team in 2001 as a staff writer, and later editor, focusing on human spaceflight, exploration and space science. Before joining Space.com, Tariq was a staff reporter for The Los Angeles Times, covering education and city beats in La Habra, Fullerton and Huntington Beach. He is also an Eagle Scout (yes, he has the Space Exploration merit badge) and went to Space Camp four times. He has journalism degrees from the University of Southern California and New York University.