Tuesday , May 18 2021

The moon has a distant side, not the dark one



China now has two history-making robots that return images from the Moon area where humanity never existed before. This side of the moon is remote and mysterious, but, in spite of the pop culture to the contrary, it is not always dark. In fact, after touching the surface of the moon, the probe sent a picture of a new home showing a rocky, crater and highly illuminated landscape.

The Chinese investigation – involving the lender and the rover – landed at 10:26 on Thursday, Beijing time, as part of the Chinese mission Chang & # 39; e-4 to explore the side of the Moon we can not see from Earth. Since the Moon needs about the same time to revolve around its axis, as is the case with Earth's orbit, we see only one half of the Moon: its close side. Chinese landing on the Moon far the first was the world, partly due to the technical difficulties that this distance had. It is really difficult to get radio signals from Earth to a robot on the other side – or vice versa – when the entire majority of the Moon is planted between them.

China has overcome the signal gap by sending a satellite called Queqiao, which communicates with the probe and transmits information, including photos, back to Earth. The photos are light because the light on the opposite side of the Moon is actually there is there is no permanent dark side of the moon. "The Half Moon is always illuminated by the Sun – just like the Earth," says Frederick Walter, professor of physics and astronomy at Stony Brook University. The Verge.

Our planet experiences daylight and night because the Earth spins on its axis while circling the Sun. The sun-centered side is bright, the side facing the night. During 24 hours, the slow turning of the world circulates through both. (Things become strange on the poles, but even those who experience light and darkness.) The moon passes through a similar cycle, but on a slower schedule: a full lunar day lasts about 29 Earth days. Walter calculated that, when the Chang-e-4 probe dropped to the far side of the moon, it was about 9 o'clock at local lunar time.

"Where the Chinese lander has come down, it's a daylight," Walter says. The cameras captured by the camera on Land & # 39; e Chang & # 39; e-4 show a router, named Yutu-2, that throws the shadow on the Moon surface, reports Planetary Society. This is perfect for a mission that relies on solar energy New York Times.

Though you will not be able to see their landing location, you will be able to tell when Land & # 39; er Chang & # 39; e-4 and Yutu-2 are bathed in light or in the dark, just looking at the sky at night without clouds. When the Sun shines fully on the Moon side facing the Earth, we see a bright, full moon – but the distant side of the Moon is dark. And when the Sun shines on the far side of the Moon, the near side is dark and we see the new moon. Meanwhile, the wax and falling moon will mark whether robots are entering the dusk or dawn.

Meanwhile, astronomers and space enthusiasts will wait for any news from the mission. We've seen distant views on the far side of the Moon before. This was the first time in 1959 when Soviet aircraft Luna 3 took a rough photo of landscaped crater landscapes. Since then, NASA Lunar Reconnaissance Orbiter has taken photos and mapped the surface so we can see the far side in sharp, complex images.

But these pictures are still taken from the distance. Now that the Chinese investigation has touched, we have more prospects than ever before. The plane hit the target in the Von Kármán crater in the South Pole-Aitkena basin, according to state media in China. The slope is massive, a distance of 1,550 miles wide and long for millennia. The Yutu-2 rover is equipped with radar penetrating the earth and exploring below the Moon's surface. And while we wait to gather his scientific data, we can enjoy the views he sends back from the other side of the Moon – which is now sunny.


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