Exploring Our Own Back Yard
The structures of the terrestrial planets are similar. Each planet has a layered structure that developed through a process called […]
Exploring Our Own Back Yard Read More »
The structures of the terrestrial planets are similar. Each planet has a layered structure that developed through a process called […]
Exploring Our Own Back Yard Read More »
Earth’s circumference was first accurately measured more than 2,000 years ago by the Greek astronomer Eratosthenes, who at the time
How was the size of Earth first measured? Read More »
To begin with, Earth is rotating on its axis at the familiar rate of one revolution per day. For those
How fast is Earth moving through space? Read More »
The famous Northern and Southern Lights — Aurora Borealis and Aurora Australis for those Latin lovers among us — are
What causes the Northern and Southern Lights? Read More »
Of course, the nearest star to Earth is the one we see every day — our dear old Sun. At
What is the nearest star? Read More »
For the most part, the rise and fall of the tides is caused by the gravitational influence of the Moon.
What causes tides? Read More »