Table of Contents
Where do you think the Earth came from?
solar nebula
Earth formed around 4.54 billion years ago, approximately one-third the age of the universe, by accretion from the solar nebula. Volcanic outgassing probably created the primordial atmosphere and then the ocean, but the early atmosphere contained almost no oxygen.
How do we know what’s inside the Earth?
So scientists rely on seismic waves—shock waves generated by earthquakes and explosions that travel through Earth and across its surface—to reveal the structure of the interior of the planet. Thousands of earthquakes occur every year, and each one provides a fleeting glimpse of the Earth’s interior.
What is the deepest man has gone into the Earth?
Kola Superdeep Borehole
In terms of depth below the surface, the Kola Superdeep Borehole SG-3 retains the world record at 12,262 metres (40,230 ft) reached in 1989, and is still the deepest artificial point on Earth.
Are there any evidence that humans are not from Earth?
Citing everything from sunburn to childbirth in his book Humans are not from Earth: a scientific evaluation of the evidence, Dr. Ellis Silver points out all of the things that seem to contradict the idea that we evolved over millions of years in our earthly environment.
Why does the earth keep falling off the Earth?
But more to the point, the force that keeps everything on the Earth from falling off it is gravity: it’s the pull exerted by one object on another because of its mass. For objects like the Earth, the force exerted by the Earth’s mass pulls objects in the direction of the Earth’s centre.
Why does the Earth appear to be flat on the surface?
The earth is so large that it appears flat to an observer on the surface, so as a person travels ‘around’ the sphere of the planet, they are upright the entire time, eventually arriving at the place that was ‘upside down’ relative to where they were standing before. In fact, direction itself is a product of human perception. What is up?
How does the Earth appear to be upside down?
Relative to someone 180 degrees around the globe, they do walk upside down. The earth is so large that it appears flat to an observer on the surface, so as a person travels ‘around’ the sphere of the planet, they are upright the entire time, eventually arriving at the place that was ‘upside down’ relative to where they were standing before.