Narrator: 4 and a half billion years ago, clouds of cosmic dust and gas which were orbiting the Sun collided into one another, creating the Earth, our planet, the home of mankind. It spins at 1000 ...

At about noon, Earth tears apart, bleeding liquid rock as temperatures hit 3,800 degrees. Our planet is no more. More from Science Following is a transcript of the video. Narrator: Earth zooms ...

Albert Einstein's general theory of relativity was published more than a century ago and and it could save Earth from a black ...

NARRATOR: Surprisingly, even at these extremely high pressures and temperatures, water can become ice, but not in the form we're familiar with on Earth. GURNEY: Deep in the planet of Uranus ...

It just tells me that the planet is alive, not literally, but figuratively. NARRATOR: And when we look beyond Earth and its moon, out into our solar system, other dynamic worlds like ours do exist.

Narrator: By their calculation, that gravitational pull is five times greater than Earth's. So they reasoned that this "something" was as large as a planet orbiting our sun. In fact, they even ...

2. The echidna hasn't been seen in 62 years. Attenborough's long-beaked echidna - named after British broadcaster and "Planet Earth" narrator Sir David Attenborough - hasn't been spotted since 1961.

In Silver, an intelligent Young Adult novel by Olivia Levez, an extraterrestrial girl plans to colonise Earth, but finds her ...

anywhere from 200 to 400 miles above the planet in low-Earth orbit. Mosher: This reduces the connection delay that is found with traditional internet satellite. Narrator: Once in orbit ...

Everyone on Planet Earth with a pulse and a scintilla of interest in professional football knows the Browns Deshaun Watson ...