Astronomers have spotted a group of stars that are shaped like pumpkins

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Astronomers have spotted a group of stars that are shaped like pumpkins.

According to a NASA press release about the discovery, their somewhat flattened form is caused by an extremely fast rotation.

Steve Howell, one of the researchers, said, "These 18 stars rotate in just a few days on average, while the sun takes nearly a month. The rapid rotation amplifies the same kind of activity we see on the sun, such as sunspots and solar flares, and essentially sends it into overdrive."

As a result, they are said to "...produce X-rays at more than 100 times the peak levels ever seen from the sun."

The release also states that "the most extreme member of the group, a K-type orange giant dubbed KSw 71, is more than 10 times larger than the sun, rotates in just 5.5 days, and produces X-ray emission 4,000 times greater than the sun does at solar maximum."

These stars were identified with the help of the Kepler mission's field of view survey and the Swift spacecraft's onboard instruments.

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How to grow a 2,000-pound pumpkin
Giant-pumpkin grower Ron Wallace holds a single seed at the pumpkin patch in his garden outside his home in Greene, R.I., Aug. 18, 2015. (AP Photo/Charles Krupa)
In this Tuesday, Aug. 18, 2015, photo, Ron Wallace protectively covers one of four giant pumpkins at the pumpkin patch in his garden outside his home in Greene, R.I. Wallace, a country club manager, has spent 27 years at the hobby, swapping ideas with growers worldwide. (AP Photo/Charles Krupa)
Ron Wallace rests on a giant pumpkin at the pumpkin patch in his garden outside his home while rubbing sulfur on the stem, to prevent attraction from pests and bugs, in Greene, R.I., Tuesday, Aug. 18, 2015. (AP Photo/Charles Krupa)
Ron Wallace points to one of his giant-pumpkin-contest winning ribbons in a trophy room of a garden shed near the pumpkin patch of his garden outside his home in Greene, R.I., Tuesday, Aug. 18, 2015. (AP Photo/Charles Krupa)
With his giant pumpkin entry on a trailer behind his pickup truck, Ron Wallace drives past other entries as he arrives for a competition at the Rochester Fair in Rochester, N.H., Saturday, Sept. 19, 2015. (AP Photo/Charles Krupa)
Ron Wallace, right, drops the rear gate of a trailer holding one of the giant pumpkins he grew this season prior to the weigh-off at the Rochester Fair in Rochester, N.H., Saturday, Sept. 19, 2015. (AP Photo/Charles Krupa)
Judges measure as volunteers examine the entries prior to the giant pumpkin contest weigh-off at the Rochester Fair in Rochester, N.H., Saturday, Sept. 19, 2015. (AP Photo/Charles Krupa)
A judge takes a look under the pumpkin entry, grown by Ron Wallace, during the giant pumpkin contest weigh-off at the Rochester Fair in Rochester, N.H., Saturday, Sept. 19, 2015. (AP Photo/Charles Krupa)
Other competitors watch as the entry grown by Ron Wallace is loaded onto a scale during the giant pumpkin contest weigh-off at the Rochester Fair in Rochester, N.H., Saturday, Sept. 19, 2015. (AP Photo/Charles Krupa)
Ron Wallace raises his arms as the weight of 1,975 pounds is announced for his pumpkin entry, which won the competition, during the great pumpkin contest weigh-off at the Rochester Fair in Rochester, N.H., Saturday, Sept. 19, 2015. (AP Photo/Charles Krupa)
Ron Wallace, center, is congratulated by other giant-pumpkin growers after winning the great pumpkin contest weigh-off at the Rochester Fair in Rochester, N.H., Saturday, Sept. 19, 2015. Wallace's entry topped the scales at 1,975 pounds. (AP Photo/Charles Krupa)
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