The moving Earth.
The Moving Earth
Even though we cannot sense it, the Earth is constantly in motion. In
fact, the Earth isn't just moving, it's moving really fast! The fact
that we do not feel as if we are moving led people to believe that the
Earth is the stationary center of the universe for centuries.
Eventually, astronomers discovered that the only way to explain
all of the motions they observed in the sky was if the Earth
were really moving. From their observations of the sky, they realized
that there are two components to the Earth's motion; the Earth is orbitting the Sun, and the Earth is spinning like a top.
You might also be interested in:
People have been living in North America for a long, long time. The first people to live there were the Native Americans. They didn't have clocks or calendars so they watched tides, the Sun, the Moon,...more
Man has always observed the sky. By watching the Sun and Moon, early man could tell what season was coming next. They had to know this to be able to farm and hunt. Archeoastronomy started in the 1960's...more
The stones of Carnac, France, are very famous because there are a lot of them and because they are so old! The oldest stones found in Carnac are from about 4,500 B.C. That's older than the stones at Stonehenge!...more
You may have heard of the lake called Loch Ness, where people think they've seen the Loch Ness monster. Near Loch Ness there are three giant stone tombs you may not have heard of...they are called the...more
Cuzco is a city in Peru. It was the capital of the ancient Inca Empire. In ancient times, Cuzco was the center of the Inca road network which was made up of about 40,000 kilometers (25,000 miles) of roads...more
The stone rings and tombs of England and France are very famous. But, there are also stone structures in Italy. There are some neat stones in Fossa, Italy. They are standing stones. These stones form circles...more
Kepler realized that the line connecting the planet and the Sun sweeps out equal area in equal time. Look at the diagram to the left. What Kepler found is that it takes the same amount of time for the...more