In the past, one day on Earth ... only 22 hours
These fluctuations create challenges and many different questions. For a longer period of time, how has the Earth's rotation changed?
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These fluctuations create challenges and many different questions. For a longer period of time, how has the Earth's rotation changed?
With the star especially the natural satellite of the earth, there are two reasons for it to be seen clearly in the daytime: the moon is bright enough for you to see it…
NASA recently announced many tests for its top secret inventions.
Since ancient times, when modern technology was not developed, our father knew how to calculate, remember or determine time ... with very simple and interesting tips.
Wind, tides and sea currents are all natural phenomena commonly seen on Earth. But where do they come from, not everyone knows, everyone remembers.
The truth is that life on Earth will be disastrous if one day our planet stops spinning.
Do you think that the people on the brink of extinction are the scariest disaster?
Here are the most famous legends of humanity's major cultures about the Moon.
The Moon seems to follow you as you move, because it is too far away from other objects on Earth.
People have been to the Moon and have explored almost every corner of the Earth. But there is a place they have never been to: in the ground.
Saturn's moon Enceladus has a giant ocean 2 km deep beneath the southernmost icy surface.
If you get lost in the dark, the position of the Moon in the sky can help us determine the direction.
Testing of ultra-high speed boats, head implants, milk-making without cows ... are the most anticipated scientific and technological events in 2017, according to CNN.
The Great Wall is a great architecture, one of China's proud symbols. Around this famous wonder there are still many interesting mistakes.
In the morning of 13 and 14 months, astronomers can watch the meteor shower Geminids. This is also the last meteor shower of 2016.