The longest day of the year

The longest day of the year is not fixed, but alternates between two specific dates each year. The longest day of the year, also called...

Where does the question mark originate from?

The question mark is known by everyone, but who has actually invented question mark? The Middle Ages scholars, who often were monks, favored marking a...

How deep is the Ocean?

The world's deepest point in the oceans is the Challenger Deep which is found within the Marianas Trench. The Marianas Trench is a depression...

What is the difference between an ocean and a sea?

Ocean and sea are two words that are used frequently and interchangeably (in writing and conversation) to mean the same thing: a continuous mass...

M7 – The Ptolemy Cluster

What is Ptolemy Cluster Just southwest of its predecessor M6 we find the very conspicuous open cluster M7. This cluster is easily seen by the naked...

Why Does Popcorn Pop?

A popcorn kernel is a cereal grain (seed). It is made up of four major physical structures: (1) The Pericarp (seed coat or outer hull):...

Oort Cloud Facts

The Oort cloud around our solar system Recent astronomical discoveries reveal a fascinating structure within our solar system. It consists of three zones. (Four if you...

Top 7 Mad Scientists between Genius and Insanity:

  There is a thin line between genius and insanity, as the saying goes. This is certainly so for these famous scientists. While their discoveries...
money history: when,who invented money first?

History of Money

When was the money first used? Who invented money? Money is such an integral part of our everyday life that it is impossible to imagine...

Women inventors : Were they rare or ignored?

What was invented by women? You have rarely heard about female inventors. Could it really awake public interest? If they were given fair approaches by the...