The universe is so big, but man's range is so small that the furthest man has been so far is the moon, which is only 380,000 km away from earth on average. Of course, humans have also launched all kinds of probes, and if you include them, the range of human activities is much larger.
Search results for
"Lion"
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If humans evolved from the forest archaeopteryx, how did the forest archaeopteryx emerge?
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Earth
Has The Earth Used Less Water For More Than 4 Billion Years? Scientists Find The Answer In a Rock
The modern Earth's atmosphere is so rich in oxygen that the vast majority of this hydrogen will be re-oxidized to water without escaping from the Earth's top atmosphere
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Extraterrestrial
What Exactly Does The Sun Use As Fuel And How Has It Been Able To Burn For 4.6 Billion Years Without Going Out?
The sun, which we call the 'source of all things', has been sending light and heat to the earth for the past 4.6 billion years, which is why the earth is such a vibrant planet.What exactly does the sun use as fuel and how has it been able to burn for 4.6 billion years without going out?
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Science
If Scientists Have Discovered Something That Shouldn't Have Existed Hundreds Of Millions Of Years Ago, Should Humanity Be Wary?
In theory, when a civilization develops into a civilization that can cross the stars, there is basically no risk of extinction
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Extraterrestrial
The Solar System Moves 7 Billion Kilometres a Year, But The North Star Is Always Due North - Why Is That?
In our universe, whether as large as a galaxy or as small as an electron, we are always in motion, and even when we think we are sitting motionless in our chairs, the earth is carrying us around the sun at a speed of about 30 kilometres per second, and the sun is also in motion, in fact it is carrying the entire solar system around the centre of the milky way, and at a speed of about 220 kilometres per second.
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Extraterrestrial
400 Million Kilometres Away, a Probe Captures a View Of a Martian Ravine, Bringing The Planet To Life
Nowadays, Mars is obviously unsuitable for direct human habitation, because the environment of Mars is very different from that of Earth, such as Mars is unusually arid, desolate and without a trace of life. Despite this, scientists are still keen to explore Mars
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The 500 trillion ton comet was discovered in 2010 by astronomers Pedro Bernardinelli and Gary Bernstein
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Biology
On The Road To Evolution, The Acacia Tree And The Giraffe Have Been Fighting Each Other For Millions Of Years
The length of the giraffe's tongue can reach more than 40 cm, usually, they only need to use their flexible tongue to avoid the hard thorns of the acacia tree, and then gently roll, you can eat the leaves
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Biology
A Female Spotted Hyena With Lad Parts? Is It a Genetic Mutation, Or Is It Male Incompetence?
The hermaphroditic characteristics of the spotted hyena are completely opposite to those of humans, so is the social system of the spotted hyena also opposite?