400 km away, the astronaut on the ISS station sent back a strange image: Why are many people surprised?

Tram Ho

Cách xa 400 km, phi hành gia trên trạm ISS gửi về 1 ảnh lạ: Vì sao nhiều người sửng sốt? - Ảnh 1.

According to NASA’s Earth Observatory, an astronaut from Expedition 67 aboard the International Space Station recently captured a stunning image of the “sunglint” phenomenon, which turns the sea surface into a giant silver mirror. around the sea in Greece. According to experts, this interesting phenomenon occurs because sunlight reflects directly from the calm sea surface to the astronaut’s camera.

Specifically, this special photo was taken by the astronaut with a digital camera facing out from the window of the International Space Station on June 25. The large landmass in the center of the photo is Milos, a volcanic island about 151 square kilometers of Greece. Meanwhile, the smaller and uninhabited land on the left side of the photo is Antimilos, an island about 8 square kilometers.

Cách xa 400 km, phi hành gia trên trạm ISS gửi về 1 ảnh lạ: Vì sao nhiều người sửng sốt? - Ảnh 1.

Astronauts on the ISS captured the phenomenon of turning the waters surrounding the Greek islands into a silver mirror. Photo: NASA Earth Observatory

The silver waters that surround these islands are the Myrtoan Sea to the north of Milos and the Sea of ​​Crete to the southwest. Both belong to the Mediterranean Sea.

Viewers of this photo can see that the ripples and twists look like scratches on the mirror. These are ocean currents on the surface and deeper below the sea surface… Most of these phenomena will usually not be obvious when observed from space. But by scattering some sunlight, these phenomena become more visible in the sunglint. According to the National Oceanic and Atmospheric Administration (NOAA), one of the most prominent structures in the image. above is the current to the right east of Milos. It looks almost like a giant whirlpool from above. But instead of pulling everything down like a whirlpool, this current plays an important role in maintaining ocean currents. This is a factor that helps to circulate nutrients in the ocean in the vicinity.

In addition, according to NASA’s Earth Observatory, another notable feature is a long straight streak located at the bottom and left of the image. Most likely this is a watershed from a ship moving at high speed on the surface of the sea.

But according to experts, the most interesting structure in this image is believed to be a collection of relatively harmless-looking parallel lines off the northeast coast of Antimilos. Specifically, these lines are largely obscured by the cloud surrounding the island. It’s probably an internal wave – a large wave that travels along and then travels through the water from below the surface.

Unlike waves on the water surface, internal waves are the result of gravity waves and are mainly formed by ocean currents or strong winds, experts say.

Spectacular moments of lunar eclipse

This is not the first time astronauts on the International Space Station have captured the impressive image. Previously, the crew on the ISS had admired the amazing scene when the lunar eclipse took place on the night of May 15 and the morning of May 16.

In particular, astronaut Samantha Cristoforetti of the European Space Agency (ESA) shared several photos capturing the spectacular view of the different phases of the lunar eclipse on Twitter .

Cách xa 400 km, phi hành gia trên trạm ISS gửi về 1 ảnh lạ: Vì sao nhiều người sửng sốt? - Ảnh 2.

Astronauts from the ISS take pictures of the Moon during a lunar eclipse. Photo: ESA

Samantha Cristoforetti is a female astronaut assigned to the ISS. She has taken many beautiful pictures during her stay on the ISS in 2014 and 2015.

The International Space Station usually moves about 400 km above the Earth. The ISS completes one orbit around the Earth every 90 minutes. So astronauts on the ISS can see the lunar eclipse within a few orbits.

This total lunar eclipse took place at about 8:32 am on May 16 (Vietnam time) when the Moon entered the bright part of the Earth’s shadow, and ended more than 5 hours later. In particular, the total lunar eclipse phase takes place when the Moon is completely covered by the dark part of the Earth’s shadow. This particular phase lasted for 85 minutes and was also the longest in 33 years.

During a total lunar eclipse, the Moon will not disappear from the sky but turn red. This effect occurs due to the scattering of light in the Earth’s atmosphere. So this special effect is also called “blood moon”.

Some images taken by female astronaut Cristoforetti show the moment the darkened Moon peeks out through the solar panels of the International Space Station.

Cách xa 400 km, phi hành gia trên trạm ISS gửi về 1 ảnh lạ: Vì sao nhiều người sửng sốt? - Ảnh 3.

The moment the shadowed Moon peeked out through the solar panels of the ISS station. Photo: ESA

The lunar eclipse that takes place in May is the first lunar eclipse of 2022. This phenomenon is best observed from the Americas, however, astronomy enthusiasts in western Africa and Europe can also follow. partial tracking.

According to experts, the next total lunar eclipse will take place on November 8. Observers in the western United States, East Asia and Australia can conveniently track this phenomenon.

Article referenced source: Livescience, Space

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