2024年8月8日 · The Perseids are the ionization trails made by little bits of debris from comet 109/P Swift-Tuttle, streaking into Earth's upper atmosphere at 37 miles (60 km) per second. The Perseids were...

The Perseids are a prolific meteor shower associated with the comet Swift–Tuttle that are usually visible from mid-July to late-August. The meteors are called the Perseids because they appear from the general direction of the constellation Perseus and in more modern times have a radiant bordering on Cassiopeia and Camelopardalis .

The parent comet responsible for the Perseid meteor shower is a rather large comet called 109P/Swift-Tuttle. The comet orbits the sun approximately every 133 years.

2025年1月14日 · Comet Swift-Tuttle is the largest object known to repeatedly pass by Earth; its nucleus is about 16 miles (26 kilometers) wide. It last passed near Earth during its orbit around the sun in...

2024年7月16日 · You may have already spotted a few Perseids streaking across the summer skies! This shower, part of the debris stream of comet Swift-Tuttle, actually starts in mid to late July and lasts through most of August. While most of these nights only showcase a few meteors each hour, the peak of the Perseids brings many, many more.

In 2025, the Perseids will peak on the night between Aug 12–13. The Perseids are one of the brighter meteor showers of the year. They occur every year between July 17 and August 24 and tend to peak around August 9-13. Made of tiny space debris from the comet Swift-Tuttle, the Perseids are named after the constellation Perseus.

2024年8月9日 · Meteor showers are caused by Earth passing through the rubble trailing a comet or asteroid as it swings around the sun. This debris, which can be as small as a grain of sand, leaves...

Mostly small bits of stony grit, Perseid meteoroids were once expelled from Comet Swift-Tuttle and continue to follow this comet's orbit as they slowly disperse. The featured animation depicts the entire meteoroid stream as it orbits our Sun.

seventeenth century Persian paintings by Muhammad Zaman and Ali Quli Jubbahdar that depict comets or fireballs. From the inscriptions on them, the paintings were dated and on that basis the comets identified as those seen in the

comet ( نجوم ) واژه مصوب: ستارۀ دنباله‏دار تعریف: جسمی از یخ و غبار در حال گردش به دور خورشید که وقتی به نزدیک خورشید می‏رسد، بخشی از آن بخار می‏شود و دُم بلندی به دنبال هستۀ آن در فضا کشیده می ...