Comet ISON, formally known as C/2012 S1, was a sungrazing comet from the Oort cloud which was discovered on 21 September 2012 by Vitaly Nevsky (Віталь Неўскі, Vitebsk, Belarus) and …

2013年7月15日 · Comet ISON, which will round the sun on Nov. 28, 2013, at a distance of just 730,000 miles from the sun, is what’s known as a sungrazing comet, due to its close …

2019年1月4日 · Comet ISON was a sungrazing comet that was expected to put on a spectacular show in Earth's sky in late 2013. However, shortly after rounding the sun's far...

2024年11月3日 · Twelve NASA spacecraft and the International Space Station observed and detected Comet ISON on the final stretch of its multi-million year journey from the Oort Cloud …

2013年3月29日 · Comet ISON is now approaching the inner solar system. Discovered last year, the comet remains unusually active for its distance from the sun. If current trends continue, …

2013年12月13日 · Comet ISON was a rare interloper in the inner solar system from the faraway Oort Cloud, a sphere of comets that surrounds the sun and planets about a light-year away. Its...

2013年11月20日 · Comet C/2012 S1, better known as comet ISON, may become a dazzling sight as it traverses the inner solar system in late 2013. During the weeks before its Nov. 28 close …

2013年4月23日 · This NASA Hubble Space Telescope image of Comet C/2012 S1 (ISON) was photographed on April 10, when the comet was slightly closer than Jupiter's orbit at a distance …

2013年3月29日 · Comet ISON is now approaching the inner solar system. Discovered last year, the comet remains unusually active for its distance from the sun. If current trends continue, …

A number of NASA missions, including STEREO, are planning an observing campaign to observe the comet as it passes by the Sun. Below, we discuss the view that the STEREO …