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Sharpen Your General Knowledge
Shamim Ansary:
How Do Astronomers Study Galaxies and Figure Out What Happened Billions of Years Ago?
By studying galactic light that originates 300 million light-years away, astronomers can look at galaxies that are 300 million years younger than the Milky Way.
The light we see today started traveling 300 million years ago, so it represents the source galaxy as it was 300 million years ago.
Galaxies at different distances portray different stages of galactic evolution.
Shamim Ansary:
Why Can Fossils Be Misleading In the Study of Evolution?
The fossil record is biased toward organisms who were very common, who may have had hard shells or bony structures, and whose species lasted a long time.
Therefore, it does not give us a full picture of what species may have been active in the evolutionary past.
Fossils are also unlikely to record soft structure changes such as an increase in muscle mass or the development of new organ systems.
Shamim Ansary:
Who Were Some Important Women Philosophers From Antiquity?
Although they probably are but the tip of an iceberg, Themostocles, Theano of Crotona, Diotima of Mantinea, Aspasia of Miletus, Aesara of Lucania, Phintis of Sparta, Perictione I, Theano II, Hypatia of Alexandria, Ascepigenia of Athens, and Arete of Cyrene deserve specific mention.
Shamim Ansary:
What Are the Most Common Surnames In the United States?
The most common surnames in the United States in order, are Smith, Johnson, Williams, Jones, and Brown.
A surname is a name added to a given name and in many cases, a surname is a family name.
In Western countries, a surname is also known as a “last nameâ€, but in many countries in Asia, the family name, or surname, comes before the person’s first name.
In Iceland, however, most people do not use family names. Instead, a person’s surname indicates the first name of the person’s father.
Shamim Ansary:
What Is the Skin That Forms On the Surface of Milk When It Is Heated?
The skin that forms on the surface of milk when it is heated is a complex of casein, or milk protein, and calcium, and results from evaporation of water at the surface of the heated liquid and the concentration and coagulation of protein there.
Skimming the skin off removes significant amounts of nutrients.
Skin formation can be minimized by covering the pan or whipping up a little foam; either slows down evaporation.
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