어젯밤(7월28일)에 천체 관측자들에게는 월식으로 가장 오래 볼수 있는 "붉은달"을 21세기의 첫번째 월식에서 볼수 있을것으로 기대된다. 달이 떠오르면서 지구에 완전히 가려지면, 달은 붉은색 또는 검붉은 색으로 우리눈에 들어오게 된다고 한다.
어젯밤 월식은 정확히 1시간 43분간 지속될것이라고 한다. 이월식을 유럽, 중동지역, 아프리카, Australia그리고 대부분의 아시아지역과 남미지역에서 잘 볼수 있을것이라고 한다.
영국에서는 월식동안에 완전히 붉은달을 관측할수 있으며, 저녁 9시부터 10시15분까지 계속되는데, 구름이 끼지않으면 아주 잘 보이는데,공교롭게도 많은 지역이 구름으로 가려 질것으로 예상된다.
같은 시간에 그리고 다음날 낯시간동안에 화성은 2003년 이후 처음으로 지구와 가장 가까운 거리에 접근하여, 하늘에 구름없이 맑으면 "붉은밝은별"로 육안으로 볼수있을것이라고 한다.
"This is actually almost as long as a lunar eclipse could be," Prof Tim O'Brien, an astrophysicist at University of Manchester, explained.
It coincides not only with Mars's close approach, but with what he described as a "procession of planets" - a line-up of our celestial neighbours that will give skywatchers a particularly good view of Venus, Jupiter, Saturn and Mars.
Because the Moon is far away from Earth relatively speaking - its orbit is an ellipse, so it moves closer and further and looks larger and smaller from Earth.
"Mars will look like this beautiful bright red star just below the Moon," said Prof O'Brien.
"Every couple of years or so, the Earth overtakes Mars on the inside as it orbits the Sun, so Mars is closest to us.
"And because of the elliptical shape of the orbit, it's even closer than normal; it really is a great time to spot Mars."
The eclipse had already started by the time the Moon rose over the UK and Western Europe.
The best views - weather permitting - were expected to be across Eastern Europe, Central and East Africa and South East Asia, from where the entire eclipse is visible.
So, from the UK and Europe, the south-east was the place to look for the rising, eclipsing Moon with a bright red Mars below. Jupiter could also be seen in the southern sky and Venus in the west.
Dr Emily Brunsden, director of the University of York's Astrocampus, added that this eclipse was a "micro blood moon".
"This is a total eclipse at a time in its orbit when it is close to being the farthest from Earth, or at apogee," she said.
"Hence the Moon was fractionally smaller than usual."
https://www.bbc.com/news/science-environment-44945452
- In pictures: Blood moon seen around the world (링크에서 붉은달을 볼수있다.)
같은 시간에 그리고 다음날 낯시간동안에 화성은 2003년 이후 처음으로 지구와 가장 가까운 거리에 접근하여, 하늘에 구름없이 맑으면 "붉은밝은별"로 육안으로 볼수있을것이라고 한다.
Why will the eclipse last so long?
The Moon passes right through the centre of the Earth's shadow, at the shadow's widest point.
"This is actually almost as long as a lunar eclipse could be," Prof Tim O'Brien, an astrophysicist at University of Manchester, explained.
It coincides not only with Mars's close approach, but with what he described as a "procession of planets" - a line-up of our celestial neighbours that will give skywatchers a particularly good view of Venus, Jupiter, Saturn and Mars.
Because the Moon is far away from Earth relatively speaking - its orbit is an ellipse, so it moves closer and further and looks larger and smaller from Earth.
"Mars will look like this beautiful bright red star just below the Moon," said Prof O'Brien.
"Every couple of years or so, the Earth overtakes Mars on the inside as it orbits the Sun, so Mars is closest to us.
"And because of the elliptical shape of the orbit, it's even closer than normal; it really is a great time to spot Mars."
Where will the eclipse be visible?
Where skies are clear of cloud, the spectacle is visible almost everywhere around the world, with the exception of North America.The eclipse had already started by the time the Moon rose over the UK and Western Europe.
The best views - weather permitting - were expected to be across Eastern Europe, Central and East Africa and South East Asia, from where the entire eclipse is visible.
So, from the UK and Europe, the south-east was the place to look for the rising, eclipsing Moon with a bright red Mars below. Jupiter could also be seen in the southern sky and Venus in the west.
Dr Emily Brunsden, director of the University of York's Astrocampus, added that this eclipse was a "micro blood moon".
"This is a total eclipse at a time in its orbit when it is close to being the farthest from Earth, or at apogee," she said.
"Hence the Moon was fractionally smaller than usual."
Stages of a total lunar eclipse
- Penumbral eclipse begins: This starts when the outer (and lighter) part of the Earth's shadow begins moving across the Moon
- Partial eclipse begins: This stage takes hold when the darker, inner part of the Earth's shadow (umbra) begins covering the Moon
- Total eclipse begins: Also called totality, this occurs when the umbra completely covers the Moon, turning it a reddish brown colour
- Maximum eclipse: The mid-point of totality
- Total eclipse ends: The umbra starts moving away from the Moon's face after totality
- Partial eclipse ends: Earth's umbra completely leaves the surface of the Moon
- Penumbral eclipse ends: The outer part of the shadow (penumbra) completely moves away from the Moon
https://www.bbc.com/news/science-environment-44945452
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