The 500 trillion ton comet was discovered in 2010 by astronomers Pedro Bernardinelli and Gary Bernstein

Since there are many lakes in China, many of them have the title of "largest".

When scientists conducted research in the Arctic Circle, they found some mysterious giant holes in the Siberian plain within the Arctic Circle.

The seven stars in a row are Saturn, Neptune, Jupiter, Mars, Uranus, Venus and Mercury in the solar system.

If humans evolved from the forest archaeopteryx, how did the forest archaeopteryx emerge?

What exactly is the Loch Ness Monster?

How long can humans survive on earth? This is a question that many of us want to know, and i believe that we do not want to wake up to a "Purgatory" Like venus, and hope that the earth can remain alive forever, so that we humans can continue and our generations can survive on earth forever. If the earth's environment were to change drastically and become an extremely hot planet like venus or mercury, then naturally everything in the world, including humans, would not be able to exist.

Dinosaurs left a fascinating chapter in the evolution of life on earth, first appearing some 230 million years ago and "Ruling" The planet for 160 million years. To this day, there are numerous dinosaur fossils scattered around the world, still silently telling us of their former glory.

The earth was born more than 4 billion years ago, when it was very different from the earth of today, one of which is that the environment of cosmic space is more different.

In general, when a spacecraft, probe or rocket wreckage re-enters the atmosphere, they are fast, reaching several kilometers per second or even faster