The Nebula is one-degree Kelvin, which is -272 degrees Celsius. It is found in Centaurus constellation. The nebula is colder than the background temperature of deep space.
For the first time, the cell was discovered and named by Robert Hooke in 1665. He noticed that it looked surprisingly like a cell or small rooms in which the monks lived, hence its name.
The Olympic Games are held every 4 years. Each time a new city is selected to host the event, with the games having been held in most major cities around the world.
Cristiano Ronaldo is a football player and is the most famous athlete in the world. He captains the Portugal national team and plays as a forward for Italian club Juventus. He is the first player to win the trophy five times. This player was born in 1985. Cristiano Ronaldo possesses 322 million social media followers.
Nelson Mandela is a South African philanthropist and a political leader. He was born on July 18, 1918, and died on December 5, 2013. He got his law education at the University of Fort Hare. He was elected as the first black chief executive of South Africa.