Are Days and Nights Getting Longer?
Are Days and Nights Getting Longer? The summer solstice that falls this year on June 21 marks the longest day of the year in the Northern Hemisphere, sunlight-wise....
Read MoreAre Days and Nights Getting Longer? The summer solstice that falls this year on June 21 marks the longest day of the year in the Northern Hemisphere, sunlight-wise....
Read MoreWhat Is an Exoplanet and Why Do Astronomers Have Interest in Them? An exoplanet or extrasolar planet is a planet that orbits a star other than the Sun. To date,...
Read MoreWhat Causes Whirlwinds? Whirlwinds are caused by the rising of an overheated layer of air close to the ground. Whirlwinds occur when the sun heats the air near the...
Read MoreWhat Is Cold-blooded Animal? Many animals, such as fish, frogs, snakes and lizards, are often called “cold-blooded,” as opposed to...
Read MoreWhy Do Some Flowers Close up at Night? Flowers close their petals at night because they are protecting the pollen and other reproductive parts of the plant that are...
Read More