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Black Hole

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What is a Black Hole? 

Black hole is one of the most mysterious and powerful forces in the universe. A black hole is where gravity has become so strong that nothing around it can escape, not even light. The mass of a black hole is so compact, or dense, that the force of gravity is too strong for even light to escape.

Can we see them?

Black holes are truly invisible. We can’t actually see black holes because they don’t reflect light. Scientists know they exist by observing light and objects around black holes. Strange things happen around black holes to do with quantum physics and space-time. This makes them a popular subject of science fiction stories even though they are very real.

Must Read: The Planet Earth and the Universe

How are they formed?

Black holes are formed when giant stars explode at the end of their life cycle. This explosion is called a supernova. If the star has enough mass, it will collapse on itself down to a very small size. Due to its small size and enormous mass, the gravity will be so strong it will absorb light and become a black hole.

Black holes can grow incredibly huge as they continue to absorb light and mass around them. They can even absorb other stars. Many scientists think that there are super-massive black holes at the center of galaxies. Event Horizon

There is a special boundary around a black hole called an event horizon. It is at this point that everything, even light, must go toward the black hole. There is no escape once you’ve crossed the event horizon!

Who discovered the black holes?

The idea of the black hole was first proposed by two different scientists in the 18th century: John Michael and Pierre-Simon Laplace. In 1967, a physicist named John Archibald Wheeler came up with the term “black hole”.

Also Read: Milestones in Space Exploration

Fun Facts about black holes

  • Black holes can have the mass of several million suns.
  • They don’t live forever, but slowly evaporate returning their energy to the universe.
  • The center of a black hole, where all its mass resides, is a point called a singularity.
  • Black holes differ from each other in mass and their spin. Other than that, they are all very similar.
  • The black holes we know about tend to fit into two size categories: “stellar” size are around the mass of one star
    while “supermassive” are the mass of several million of stars. The big ones are located at the centers of large galaxies.

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Facts about Constellations

Aryabhata – Great Indian Mathematician and Astronomer

Amazing facts about Christmas Trees

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Syskool
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christmas trees

Christmas Day is an annual Christian holiday held on December 25th celebrating the birth of Jesus. Christmas trees are also known as the Yule-tree.

Facts About Christmas Trees

  • hristmas trees are evergreen trees, usually either a fir tree, pine tree or spruce tree.
  •  Decorating Christmas trees originated in 16th century Germany when Christians would bring decorated trees into their homes.
  •  The Christmas season officially begins when Santa arrives at the end of the Macy’s Thanks giving Parade.
  •  X means Christ in Greek so to shorten the word Christmas we sometimes use X-Mas.
  •  In 1836 Alabama became the first state in the US to declare Christmas a legal holiday.
  • Oklahoma became the last state to declare Christmas a legal holiday in 1907.
  •  In June of 1970 Christmas became a federal holiday in the US.
  •  Christmas trees were first decorated with foods such as apples, nuts and dates.
  •  In the 18th century Christmas trees began being decorated with candles.
  •  Electric Christmas trees lights were first used in 1895.
  • Did you know that giving presents were once banned by the Catholic Church?  It was believed that gift giving was connected to paganism.
  •  If you received all the gifts from the song “The Twelve Days of Christmas” you would have 364 presents.
  • Do you know why we say the Twelve Days of Christmas?  It is believed that it took the 3 kings 12 days to find baby Jesus.
  • The song Jingle Bells was written by James Pierpont in 1857.  It was originally called “One Horse Open Sleigh” and was made for Thanksgiving.
  • Many years ago in England a traditional Christmas dinner included a pig head served with mustard.
  • The tradition of naughty children getting a lump of coal in their stocking comes from Italy.
  • Did you know that tinsel was once made of real silver! It was invented in Germany in 1610.
  •  There are two islands named Christmas. Christmas Island (formerly Kiritimati) in the Pacific Ocean and Christmas Island in the Indian Ocean.
  • The tallest Christmas trees ever displayed was in Seattle Washington in 1950.  The Christmas trees was 221 feet tall!
  • It is said that candy canes were invented by a candy maker in Indiana.  He wanted to use them to spread the name Jesus around the world.
  • Santa Claus is also known as St. Nicholas, Father Christmas, Grandfather Frost and Kris Kringle.
  •  Santa is believed to bring gifts to good girls and boys on the night before Christmas (December 24th).
  • There are 3 towns in the US that are named Santa Claus. One in Georgia, one in Arizona and one in Indiana.
  • Santa Claus 8 eight reindeer are named: Comet, Cupid, Dasher, Dancer, Prancer, Vixen, Donder Blitzen

Must Read:

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10 Major Festivals of India

Space Exploration From Earth

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Syskool
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space exploration from earth

Facts about Uses of Aloe Vera

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Syskool
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Aloe Vera is the most powerful medicinal herb because of its many uses and healthful effects. In addition to having a soothing and rejuvenating effect on your skin, aloe vera gel also benefits your health in a number of ways.

Uses of Aloe Vera

Relieves a cough and cold
Aloe Vera gel is a safe and effective remedy for providing quick relief to a cough and cold. It is a potent antibacterial and antiviral agent that prevents the growth of microorganisms causing cough and cold.
Removes acne scars
Aloe Vera gel is a fantastic remedy to get rid of acne scars. It regenerates damaged tissues and decreases swelling on the affected area. Regular usage of aloe vera gel also helps prevent breakouts, resulting in smoother skin.
Must Read: Benefits of Curd
Relieves constipation
Aloe Vera is a laxative and thus, extremely beneficial in relieving constipation. It increases the ability of your gut to
absorb nutrients and digest food properly.
Prevents wrinkles
Aloe Vera can protect you from wrinkles and other signs of aging. It contains polysaccharides that stimulate the regeneration of skin cells. It also has anti-inflammatory and antioxidant properties that prevent the skin from the damage of the ultraviolet rays.
Reduces dandruff
Aloe Vera has antiviral and antifungal properties that can kill the microorganisms and prevent the hair follicles from clogging that can cause dandruff. Regular application of the gel can help you get rid of the itching and irritation associated with dandruff.
Lightens stretch marks
Aloe Vera has anti-inflammatory properties that can limit the growth of stretch marks. It has the ability to heal the small tears in the skin layers and is therefore, the perfect solution to help regain the lost elasticity caused due to stretching.
Don’t Miss: 25 Health Benefits of Lemon
Soothes skin rashes and itchy skin
Aloe Vera gel contains vitamin E which helps heal the skin. It is a good moisturiser and has natural soothing qualities which can soothe the area and reduce inflammation caused by itching.
Soothes sunburn
Aloe Vera gel is an easy and popular sunburn treatment. It is antibacterial and has soothing properties which work very well for healing sunburns.
 
Heals burns
The gel of aloe vera leaf has cooling properties that help soothe burnt skin. The gel increases blood flow in the vessels, closer to the skin’s surface, helping the damaged skin repair itself.
 Also, Read:
Benefits of Vitamin C
Surprising Benefits of eating Almonds 
Health Benefits of Coconut

Interesting Random Facts

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Syskool
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Interesting Random Facts
 

Random Facts

  • The fastest, most drastic temperature change ever recorded was a 49 °F (27 °C) rise in just two minutes.
  • In Argentina, political parties have their own brands of beer.
  • Paraguay’s president own a stolen car.
  • In 2001, Argentina had 5 presidents in 10 days.
  • Famous soccer player Mario Balotelli is an Italian, born to immigrants from Ghana, raised by a Jewish
    mother.
  • If Texas were a nation, it would be the world’s 7th largest oil producer.
  • Egypt is the most populated country in Middle East and has the world’s largest Arab population.
  • Uranus was originally called “George’s Star”(Georgium Sidus).
  • Corn can grow in multiple colours by mixing special seeds.
  • The top six crops in the world, wheat, corn, rice, barley, sorghum, and soy, are all fruits in the
    botanical sense of the word.
  • The world’s first underground park will be inaugurated in 2018 in New York.
  • Pencil sales increased 700% in the year after Sudoku became popular.
  • Humans can live unprotected in space for about 30 seconds if they don’t hold their breath.
  • It would take the average person walking nonstop approximately 347 days to walk around the world
  • Steve Jobs was awarded 141 new patents since his death.
  • 20% of office coffee mugs contain fecal bacteria.
  • The only thing left on Bill Gates’ bucket list is not to die.
  • The founders of Adidas and Puma were both NAZI.
  • The tallest man living is Sultan Kosen from Turkey, measuring 2.51 m or 8 ft 3 in.
  • The day after tomorrow is called “Overmorrow.”
  • Berlin is 9 times bigger than Paris and has more bridges than Venice
  • Wal-mart parking lots alone take up roughly the size of Tampa, Florida.
  •  Between 100 to 300 tonnes of cosmic dust enter the Earth‘s atmosphere each day.
  • The heart symbol was first used to denote love in the 1250.
  • The international telephone dialing code for Antarctica is 672.
  • The elephant is the only animal with 4 knees.
  • The opening ceremony for the 2012 Olympics had 965 drummers there.
  • It is illegal to take Indian currency (rupees) out of India.
  • India has one of the world’s highest rates of abortion.
  • India is the world’s largest producer of dried beans, such as kidney beans and chickpeas. It also leads the world in banana exports; Brazil is second.
  • India has the world’s largest movie industry, based in the city of Mumbai (known as the “City of Dreams”). The B in “Bollywood” comes from Bombay, the former name for Mumbai.
 Also, Read:
Amazing and Interesting facts about Black History Month
Interesting Facts about the 4th of July
Crazy Interesting facts that you never knew
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