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Astronomers have taken the best-ever photos of the Sun. A team of researchers used a [polar / solar] telescope at the U.S. National Science Foundation in Hawaii. The researchers took very detailed [images / image] of the Sun's surface. The pictures [show / shown] amazing new details about what is [happening / happened] on the solar surface. In particular, the scientists pointed [in / out] hundreds of spiralling areas of [activity / active] , which look like twisters [of / off] fire. These might explain a lot about the Sun's energy and how solar flares [be / are] created. Astronomer Dr David Boboltz was excited about the photos. He called the Sun a "unique [laboratory / lavatory] ". He said: "It's our closest star, and it can help us understand some very [basically / basic] laws of physics."

The new high-resolution images are the [closets / closest] ever that scientists have zoomed in on the Sun. The photographs show a 5,000-km-wide [arena / area] of our closest star. Scientists are [peculiarly / particularly] interested [in / on] photos that show what happens at the borders between the dark and bright [regional / regions] of the Sun. This is where huge spirals of fire are created. It happens when [two / too] fluids move at different speeds and meet, causing [a / the] build-up of energy. A similar thing happens [in / on] Earth, but with ocean water, not fire. You can see this in ocean waves. Dr Boboltz said: "Once there's enough energy, it can then be released [has / as] a solar flare." He said the photos could help us to "figure [out / in] and eventually predict space weather".