23:32
Tieng Anh Vui
Skygazers have seen the high point of the annual Perseid meteors.
The shower, which reached its peak on Monday night, occurs when the Earth passes through a stream of dusty debris from Comet Swift-Tuttle.
As this cometary "grit" strikes the atmosphere, it burns up, creating spectacular streaks of light across the night sky.
The meteors appear to come from a point called a "radiant" in the Constellation Perseus - hence the name Perseid.
The tiny fragments of ice and dust - they range in size from a grain of sand to around as big as a pea - hit the Earth's atmosphere at some 60km/s (134,000 mph).
As many as 60-100 streaks an hour may be visible at the height of the display.
Skywatchers were advised to lie on a blanket or a reclining chair to get the best view.'
'It was fabulous'
Comet Swift-Tuttle came relatively close to Earth in 1992, which made for an especially dramatic show. Since then, the display has calmed down.
The comet is not due to come as close to the Earth again until the middle of the next decade.
Laura, from Wiltshire, told BBC 5 live that she had seen two of the meteors.
"It's literally like a streak of lightning but without the thunder that follows it. It's a very quick flash, and if you're not looking directly at it it's like you've got something going on in the corner of your eye," she said.
"But one I saw I was looking directly at it, it was fabulous. Really bright. Streaked right across the sky."
Astronomer and science writer Dr David Whitehouse said the spectacle was breathtaking.
He said: "The light from a shooting star is like no other type of light in the sky. It's not starlight, it's not moonlight, it's not sunlight. It has a ghostly sliver and a sleeting brilliance all of its own."
Send your pictures and videos to yourpics@bbc.co.uk or text them to 61124 (UK) or +44 7624 800 100 (International). If you have a large file you can upload here.
Đăng ký: Tieng Anh Vui
Posted in: 
0 comments:
Post a Comment