Interesting and Cool Things to Know

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The Sun will become a Red Giant in about 7.7 billion years. The radius will increase by 256 times, and the outer layers of the star will reach the current orbit of the Earth.

If we weigh the entire Solar System, it turns out that our Sun contains about 99.87% of all the matter. This is equivalent to about 333 000 Earths.

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The Sun is gradually getting hotter and brighter. In about 1.1 billion years from now, our star will become 11% brighter. Life on Earth under such conditions can only survive in the depths of the oceans at best.

If male and female tigers claim the same prey, males typically back off. This differs tigers from lion males, who use their great power and drive weak females off.

Sharks have no bones (except for teeth) but cartilage instead. That's why the only extant remains of megalodons are teeth, but sometimes vertebrae are also found.

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