Pegasus is a constellation near Pisces. 51 Pegasi is a star that is barely visible to the naked eye. It is about 50 light-years from Earth. That is, when we see that star, we see light that traveled five decades...
The ozone layer is the layer with the highest levels of ozone (O3) in the Earth's atmosphere. This layer absorbs 93-99% of the ultraviolet rays emitted by the sun, which are harmful to terrestrial organisms: ultraviolet rays. About 91% of...
What are these names like?.Greenland for a place that is always snowy and white, and Iceland for a place with good greenery. .A Norwegian seafarer named Floki went to the island with his family and livestock and settled on its...
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