Science – TopLst

A Timeline of Space Exploration and the Major Milestones in Space History

Space exploration is the investigation of physical space and the universe beyond Earth’s atmosphere using space technologies and spacecraft. It includes the search for new knowledge about the universe, the study of celestial bodies and phenomena, and the development of new technologies for space travel. The goals of space exploration are scientific, technological, and commercial, and it has driven advancements in fields such as engineering, physics, and astronomy. Space exploration has been carried out by …

16 Intriguing Facts about Goblet Cells

1. The function of the goblet cell is to secrete gel forming mucins, which are the major component of mucus. 2. The goblet cell secretes mucus in two different ways: through basal secretion and stimulated secretion. Basal secretion is the normal level of secretion of mucus, which is accomplished by cytoskeletal movement of secretory granules. Stimulated secretion is secretion that is stimulated by something, like smoke or dust. Other stimuli include bacteria, viruses, and so …

25 Interesting Facts about Wind Energy

The Global Wind Day is celebrated worldwide, annually on 15 June. This event is coordinated by EWEA (European Wind Energy Association) and GWEC (Global Wind Energy Council) through a network of partners, and the purpose of this day is to discover wind, its power and the possibilities it holds to change our world. This year it will focus on energy independence around the world and how wind energy can help. Currently, countries all over the …

25 Interesting Facts about Turtles

Since 2000, May 23 – World Turtle Day, is sponsored yearly by the nonprofit corporation American Tortoise Rescue. The idea is to bring attention to, and increase knowledge of and respect for, turtles and tortoises and encourage human action to help them survive and thrive. This day is celebrated worldwide in a variety ways, dressing up as turtles or wearing green summer dresses, saving turtles caught on highways, or research activities. So why not know …

25 Facts about Orcas (Killer Whales)

Orcas, also know as killer whales, are known to be powerful predators in the wild. Due to their magnitude and intelligence, orcas have been caught for aquariums and marina parks since the early 1960’s and is probably one of the most easily recognized cetacean species. Let’s see some fascinating facts about orcas! 1. The orca (Orcinus orca) is a toothed whale and is the largest member of the Delphinidae – the family of cetaceans known …

22 Facts about Clouds

Have you ever glared at weird clouds for hours on end, and imagined all kinds of interesting shapes? Clouds are fantastic to look at, a great moment to let your imagination run wild. Let’s go and have fun learning some interesting facts that you’ve ever wanted to know about clouds! 1. A cloud is a visible mass of tiny water droplets or ice crystals. The droplets are so small and light that they can float …

Top 20: of the Most Amazing Butterflies in the World

Butterflies are the most familiar of insects to humans, due to their vivid colors and visits to flowers. There are about 18,000 species of butterflies in the world. Some species of butterflies are agents of pollination of some plants, caterpillars of a few butterflies eat harmful insects, however there are species that are pests due to their ability to damage domestic crops or trees in their larval stages. There are butterflies that have symbiotic and …

Top 10: World’s Most Venomous Snakes

About a third of adult humans have a snake phobia (ophidiophobia). Even if you’re not terrified of snakes, chances are you would jump like an acrobat if a snake were to slither unexpectedly between your legs while walking through tall grass. Scientists have found that humans were hardwired to fear snakes during our evolutionary process. And that may not be such a bad thing because there are plenty of snakes that can kill a human …

Top 10: Largest Felines

One of the most popular felid is the domestic cat, that has being associated with humans about 10,000 years ago. However, the Felidae family include all other wild cats, including the “big cats”, a term commonly used to refer large wild cats. The several species of cat are quite similar, in structure and behavior, despite of the enormous differences in size. All cats are carnivores and efficient apex predators. What is it about the big …

Top 10: Most Venomous Spiders

Spider… A lot of people gets terrified just to hear the word spider. In fact, they are not the most cuddly looking creatures and some of them can really kill people! They are everywhere, and you may not know it but, there is always a spider within a few feet of you at any one time! There are so many different spider species, approximately 40,000 world wide, that it’s hard to figure out which ones …